Loading...
Explore our articles and resources for pet parents
THE SAINT BERNARD
The Saint Bernard belongs to the AKC Working Dog Group and the UKC Guardian Dog Group. This breed originated from Switzerland and was bred by Swiss monks during the seventeenth century.
Brief History
The Saint Bernard was bred by hospice monks in the Swiss Alps at the Hospice of Saint Bernard, a refuge for travelers, to help locate and rescue travelers that had been injured by avalanches or lost between Switzerland and Italy.
Though bred for search and rescue, this brave dog was also used for drafting, guarding, and turn-spit. They are believed to have rescued over 2,000 lives through their search and rescue efforts at the hospice. They are descended from the Roman Mastiff and arrived in the U.S during the nineteenth century.
Physical Features
The Saint Bernard is a large and powerful dog breed with a large head and square shaped body. Their highly-recognizable heads have a deep furrow over the skulls, which is about twice as long as it is short.
Their eyes are intelligent and kind, with lower eyelids that don’t close completely. Their medium-sized and triangle-shaped ears are dropped and high-set. This pup’s feet are large and their tails are charmingly long.
This breed has a double coat —a thick undercoat, with a straight short or long outer coat. Its coloring ranges from red to brown, or brindle, with white markings at the chest, feet, tip of the tail, noseband and neck. There can also be markings on the collar, between the eyes, muzzle, belly, legs, and end of tail. The Saint Bernard has a dark mask on the face and ears.Don’t forget their famous wrinkles.
The long haired version of this breed looks exactly like the shorthaired breed, apart from the coat, which is typically of medium length and slightly wavy.
Average Height:
25.5 -30 inches
Average Weight:
120-180 pounds
Life Expectancy:
7-10 years
Temperament
This is an affectionate, fun-loving dog that is just as friendly with strangers as with family. It’s for that exact reason, however, that they shouldn’t be counted on to be a guard dog. This breed enjoys being around children and other families. They’re big gentle giants that thrive on playing in the snow with family members and friends. During puppyhood they are super clumsy due to their large size. As they grow into adulthood, these dogs settle down and tend to nap a lot. This breed does best in snowy, cold weather.
The Saint Bernard needs to be socialized early, and to begin positive-reward training classes during puppyhood. This super large breed is best suited for farm life or suburban homes where they will have the space they need. Unfortunately, this rules out apartment life. As the Saint Bernard ages, they can become a little lazy. It’s important to maintain their exercise schedules to keep healthy and fit.
Special Needs
This breed does best with plenty of protection from the heat and needs to be kept indoors during summer. Exercise, including walks should take place early mornings and late afternoons, so as to protect this breed from heat stroke. Winter makes every Saint Bernard happy – the colder the better!
Saint Bernards that live in warmer climates will greatly benefit from getting clipped. This breed needs to be supervised carefully over the summers to make sure that they do not get overheated. Since this is a very large dog breed, they tend to become more difficult to train as they gets larger. All the more reason to start during puppyhood.
Possible Health Concerns
This is a healthy dog breed that may be susceptible to the following health conditions:
Dilated cardiomyopathy (DCM). Genetic predisposition to DCM is seen in large breeds like the Saint Bernard. DCM is a disease affecting the heart muscle where the heart stops pumping properly.
Bloat. This breed is deep-chested, and thus more prone to bloat. Bloat is a life threatening emergency. It is caused by the twisting of the stomach, together with the accumulation of gas, with or without fluid. It is best to never elevate your dog’s water and food bowls. Stress is also a major factor in causing bloat. Never feed a Saint Bernard a large meal followed by exercise. At the first signs of dry vomiting, restlessness and discomfort, contact your emergency veterinarian. Never wait for a few hours.
Hip Dysplasia. This is a hereditary developmental disease. HD affects Saint Bernards, and occurs when the hip joint fails to develop properly. The head of the thigh bone does not fall into the hip socket. The imperfect fit results in the joint becoming loose and unstable, and results in osteoarthritis.
Laryngeal Paralysis. This is where the cartilage and the vocal folds of the larynx do not open fully, making breathing difficult. This is an acquired medical condition, and not an inherited one.
Skin Allergies like pyoderma are common in this dog breed. This is a bacterial skin infection caused by an infection in the folds and wrinkles of their skin due to grooming difficulties.
Epilepsy is an inherited disease that causes seizures. This breed will generally require treatment with anticonvulsants from their veterinarian.
Exercise
Saint Bernards need regular exercise every day to stay fit and maintain a healthy weight. They also need daily exercise to build muscle strength. Although these are strong and powerful dogs, they do not require excessive exercise. That said, this breed does enjoy hiking, sledding and long peaceful walks. (Tip: They enjoy pulling children in carts and sleds!) They love being out in the snow and cold weather and are at their best with family and children around them.
Nutrition
Feeding your Saint Bernard a well-balanced diet with high-quality food is necessary to promote good health and longevity. The diet you choose needs to be appropriate to your dog’s age, activity level and medical conditions. That said, these dogs don’t need excessive amounts of food just because they’re large. Weight needs to be actively monitored, as they gain easily. Never feed right before or right after exercising.
Grooming
Saint Bernards have either long or short hair. Both types need careful daily grooming to avoid the buildup of dirt and grime. Use a slicker brush or metal comb for tangles. Shedding occurs twice yearly. During this time, it will be necessary to groom vigilantly and to remove loose hair so as to prevent shedding around the home.
This breed enjoys being bathed. Use natural and organic dog grooming products to keep their coats healthy. Ears will need to be wiped regularly and inspected for infections. Teeth also need to be brushed every day and cleaned twice a year at the veterinarian. Trim nails as needed.
Saint Bernards are sensitive, affectionate and loving. They’ll need to have a large garden or home to live in and absolutely cannot live in an apartment. This dog breed will need to be indoors during the hot summer months. Every effort must be made to keep this breed from overheating.
The Saint Bernard makes for a great adoption in the right home environment. Puppy training should start early because they are hard to handle as they matures due to size. Puppies are energetic and will need lots of socialization. While incredibly gentle and kind, this breed still needs regular exercise and mental stimulation. They don’t do well alone at home all day and need companionship.
THE WELSH TERRIER
welsh terrier
The Welsh Terrier, also known as the Old English Terrier, comes from Wales. It is part of the AKC/UKC, Terrier Group. This breed came into existence during the 1700’s and was used in fox hunts and to catch badgers.
Brief History
The Welsh Terrier has fierce jaws and good digging skills. They were most commonly used to dig up badger lairs, but also as companion dogs. The Welsh Terrier first arrived in the U.S during the 19th century. Two older dog breeds — the Old English Black and the Tan Terrier, are believed to be related to the Welsh Terrier.
Physical Features
The Welsh Terrier is a compact and sturdy dog breed. They’re typically medium in size with a slightly rugged look. They also have a rectangular head with a square muzzle and a coarse, wiry coat. Don’t let the size fool you: though compact, their muzzles are quite strong. Welsh Terriers have a black square nose and a docked tail. They have V-shaped ears which are always folded forward. Typically, their legs, underbody and head are tan in color, with a jacket in black or grizzle.
Average Height:
18-21 inches
Average Weight:
20-28 pounds
Life Expectancy:
10-14 years
Temperament
The Welsh Terrier is friendly and outgoing. They tend to be on the feisty side with unique quirks. That being said, the Welsh Terrier is notably easy to train and game for new activities. This dog breed is known for showing intelligence and self-restraint. The Welsh Terrier is a friendly and amiable dog breed that enjoys people — especially children — and other animals. Although the Welsh Terrier has a pronounced prey instinct, when positively trained and socialized, is one of the easiest dogs to live with. They are capable of deep companionship and are immensely loyal.
The Welsh Terrier does best with lots of exercise and a fenced and secure garden or backyard. This is a very sensitive dog breed that needs tons of positive reinforcement and does well with lots of attention and affection. Care must be given to ensure that all fencing in backyards and gardens is secure, as they do have a tendency to dig. The Welsh Terrier does well with lots of off-leash running. They enjoy playing Frisbee and ball.
Special Needs
The Welsh Terrier needs an active home. This breed does well with plenty of regular exercise, positive dog training and socialization. The Welsh Terrier breed needs to be socialized from puppyhood and should never be isolated.This breed bonds closely with all family members, including children.
The Welsh Terrier needs to interact with people so as not to become bored and mischievous. Positive training needs to tailor to the specific temperament of this breed. Because of their high-energy, Welsh Terriers typically do best with an experienced dog parent that can be firm, yet kind. Interactive dog toys are a plus for the Welsh Terrier. If excessive barking is a problem, food dispensing dog toys help with boredom.
All family members need to be on the same page with positive dog training methods. Although it may be difficult to not spoil this pup, it’s for the best. The Welsh Terrier should live indoors, but may have housetraining issues if not trained positively beginning at puppyhood.
Possible Health Concerns
Legg-Perthes Disease. This is the deterioration of the top of the femur. It is characterized by a lack of blood supply and destruction of the blood vessels of the bone. It is a hereditary condition in some terrier breeds.
Dental Problems. The Welsh Terrier needs proper dental care, including preventative methods like daily tooth brushing, which will help prevent gum disease, periodontitis and endodontic disease.
Skin Allergies: This dog may be prone to Atopic Dermatitis. This is caused by an abnormal immune system response. There are many allergies which can affect the skin, and are caused by fleas, dog food and other allergens like pollen in the air. Consult with your veterinarian if your dog suffers from intense itching.
Hip Dysplasia is the abnormal development of the hip joint. It is generally characterized by a loose joint, and then degenerative joint disease.
Epilepsy is an inherited disease that causes seizures.
Primary Lens Luxation (PLL) This is an inherited disease that affects the eye. It is associated with the disintegration of the zonule fibers that hold the lens in place.
welsh terrier dog
Exercise
The Welsh Terrier is an energetic dog breed that does well with plenty of regular exercise and canine sporting activities like agility, obedience, and dock diving. Herding and Frisbee are also stress-free ways that your dog can have fun. That said, some of the best activities you can have with your dog are unorganized like going out for a jog or a long walk. Plan hikes and vigorous exercise for cool mornings.
Grooming
Clipping should be done every 8-12 weeks. The Welsh Terrier’s coat should be kept longer or unclipped in colder weather. Opting for a professional dog groomer helps with maintaining coat health.
Routine daily grooming will keep the Welsh Terrier’s coat in good condition. This is one of the easiest breeds to groom. A short bristled brush or mitt should be used to maintain a shiny and healthy coat. Twice yearly visits to the veterinarian for dental hygiene maintenance is a must. Ears need to be regularly wiped out, and nails trimmed regularly.
This breed is famously feisty, happy and energetic. They also make for good travel companions because they are so adaptable. They also love adventure. As with all terriers, it’s best to supervise when out and about to make sure that they don’t stray and that all fences are secure. Terriers are well known for digging underneath fences and escaping.
welsh terrier dog breed
THE LABRADOODLE
Known for their curly fur and agreeable disposition, the Labradoodle is a cute, fun-loving and dedicated dog. It was originally bred to be a guide dog, so it always enjoys human company and always seeks to provide companionship. The Labradoodle is highly intelligent and sociable and makes a lively life companion or a family dog. Thanks to its minimal coat shedding, the Labradoodle is ideal for people with allergies.
Brief History
The Labradoodle was bred to offer day-to-day support by the Royal Guide Dogs Association of Australia. It is a cross of the Standard Poodle and the Labrador Retriever. Thanks to its calm and people-loving heritage, this dog is quite comfortable among people and other pets as well. Its origin is just as interesting as the dog itself. The very first Labradoodle was bred in 1989 for a visually-challenged woman who lived in Hawaii. Interestingly, her husband was allergic to fur, therefore her guide dog had to be hypoallergenic. The Labradoodle was born and retained the fun-loving nature of the Labrador and the intelligence of the Poodle —making it well-balanced and loving.
Physical Features
The Labradoodle can have a variety of physical features that largely depend on its genetic heritage and parentage. The Poodle and Labrador DNA in each Labradoodle’s body play a big role in determining the overall appearance of the dog. Commonly, this dog breed emerges in coat colors such as chocolate, blonde, apricot, black and charcoal.
Seeing as this dog breed is a result of breeding with a Standard size Poodle, it has a medium sized body. Its coat of fur can be soft and wavy or curly and taut. Their ears are droopy and widely considered to be one of the most attractive features of the dog.
Average Height:
21-24 inches
Average Weight:
50-65 pounds
Life Expectancy:
12-14 years
Temperament
The Labradoodle is a cool, calm and sociable dog. This is due to its heritage. It is bred from two dogs that are well known for having a cool disposition. The Poodle is intelligent and the Labrador is a social, family-oriented dog. This dog breed is cat-friendly and interacts with felines and other dogs comfortably.
Special Needs
Seeing as it is a sociable dog, the Labradoodle can suffer from separation anxiety if left alone for long periods of time.
Possible Health Concerns
Labradoodles are generally healthy dogs, however they can suffer from certain health issues. Some of these issues are eye diseases such as cataracts and progressive Retinal Atrophy, Hip dysplasia and Addison’s disease.
Labradoodle puppy
Exercise
The Labradoodle is a big dog that loves to play and have fun. This dog needs to get between 30 and 60 minutes of exercise every day. For best results, your Labradoodle should exercise by running around in a fenced yard or dog park. Here, they can thoroughly work out their lateral muscles and have a great time. This dog makes a great jogging partner as well. Labradoodles also enjoy swimming.
Nutrition
The Labradoodle is an active dog and therefore requires a diet that can support its vibrant lifestyle. You should always strive to implement a balanced diet for your Labradoodle as it can do exceptionally well with 1 to 2.5 cups of dry food served twice every day. This is best done in the morning and in the evening after their exercise sessions. By feeding your Labradoodle twice in a day, you are able to prevent cases of gastric tension.
Grooming
The Labradoodle needs some grooming conducted so as to keep their coats in great condition. While it does not shed much, the Labradoodle still requires regular care for its coat. You should brush through its fur at least twice a day. This prevents matting and bunching up of the hair.
While grooming, you should remember to cut the hair inside the ear. Also, carefully shave the fur that is near the ear canal and under the ear too. Any hair around the eyes should be trimmed as well. This needs to be done so as to prevent the fur from obstructing your Labradoodle’s vision. Proceed to trim the hair around his pads. The nails should be trimmed as well. While bathing your Labradoodle, make sure to use a gentle shampoo. The baths should be infrequent to preserve the natural oils in their hair furthermore, your Labradoodle is best left to air-dry.
The Labradoodle is a loving, intelligent and addition to any family. The dog does not require much maintenance and is generally a strong, healthy dog. The Labradoodle lives for a long time.
World Records for Pets and Other Animals
If you always dreamed of getting in the Guinness Book of Records, then you might want to start preparing. It seems competition is tough and not just with humans — there’s a whole host of world records set by animals!
THE PARSON RUSSELL TERRIER
Parson Russell Terrier
The Parson Russell Terrier originated during the 1800’s in the United Kingdom. This dog breed was bred to chase after foxes above and below the ground. Rev. John Russell bred a strain of terriers for catching foxes in Devonshire, U.K. during the 1800’s. The Parson Terrier is larger than the Russell Terrier, and has longer legs, though the Russell Terrier is stockier than the Parson Terrier.
Brief History
The Parson Russell Terrier comes from the U.K. This terrier breed was named after the Reverend John Russell, who bred terriers to hunt foxes in Devonshire, U.K during the 1800’s. The Parson Terrier is very similar to the original terrier breed that the Rev. John Russell bred. The AKC and the parent club, the Parson Russell Terrier Association of America (PRTAA), calls this breed the Parson Russell Terrier.
Physical Features
The Parson Russell Terrier has a medium-sized body, and is a sturdy and muscular small dog breed. With a flat skull, and a black nose, the Parson Russell Terrier has v-shaped ears, and has intelligent, almond-shaped brown eyes. This is a well-balanced dog breed that has a small chest, and straight legs. Their tails are short, and are carried upright.
They have smooth coats with an undercoat. This dog breed always has 51% white coat coloring, with tan, black, and brown markings. Russell’s have a free and effortless gait. They are a confident and outgoing dog breed that does well with equestrians on horse farms.
Average Height:
10-15 inches
Average Weight:
13-17 pounds
Life Expectancy:
12-14 years
Temperament
The Parson Russell Terrier is a lively, active, and dedicated dog breed that is assertive and fun to be around. They have huge hearts, are extremely active and have a strong work drive fueled by their intelligence. Terriers are generally not good with small animals like cats. Some terriers can be snappy or reactive. This dog breed needs socialization, and positive dog training starting during puppyhood and require plenty of attention. This breed is known for their digging skills, and are passionate diggers that can escape very easily from beneath fences, and out the front door. The Parson Russell Terrier is always upbeat, happy, curious, and friendly.
Special Needs
The Parson Russell Terrier has a passion for living, and enjoys each and every day. Care must be taken that the Parson Russell Terrier does not escape from home, or when out and about. This dog breed requires an experienced and active dog parent. It does not do well with apartment living, and needs an active outdoor lifestyle. The Parson Russell Terrier does well with plenty of attention and exercise. This is a playful and curious dog breed that enjoys travel, being around people, and most especially running around!
Possible Health Concerns
Patellar Luxation: This is a hereditary condition that is caused by the abnormal development of the kneecap(patella).X-rays will aid in seeing the severity of the displacement. Treatment usually involves surgical options.
Congenital Deafness: This is a problem in Parson Russell Terriers. The BAER test is the only 100% reliable method for testing of deafness in dogs. Bilaterally deaf terriers are easier to identify.
Legg-Perthes Disease. This is the deterioration of the top of the femur that is often seen in smaller dog breeds like the Parson Russell Terrier. It is characterized by a lack of blood supply and destruction of the blood vessels of the bone. Veterinary treatment usually involves the surgical removal of the affected femoral head and neck, and physical therapy so as to stimulate limb usage.
Lens Displacement: This is a common inherited eye problem in terrier breeds. It can also be caused by trauma, enlargement of the eyeball due to glaucoma, and degenerative changes that occur from cataracts that have not been treated. Consult with your veterinarian.
Spinocerebellar Ataxia: This is an inherited neurological disease that affects the Parson Terrier. Dogs with this present loss of balance and show signs of incoordination.
The Parson Russell Terrier
Exercise
The Parson Russell Terrier is an energetic dog breed that does well with plenty of regular exercise and canine sporting activities. This dog breed also needs to be mentally stimulated when out exercising for their mental well-being. The Parson Russell Terrier can get very excitable, so plenty of off-leash exercise is necessary.
Nutrition
Without high-quality nutrition, the Parson Russell Terrier can suffer from numerous problems ranging from skin allergies, malnutrition, and other health issues. Work together with your veterinarian and possibly consider high-quality home cooked meals with added vegetables, fruits and supplements.
Grooming
This dog breed is easy to maintain. The Parson Russell Terrier has two types of coats: smooth and broken. A soft brush or hound glove works best for this breed. Regular bathing is required for this active dog breed, most especially if he’s been digging or rolling around in the mud. Nails should be trimmed when needed, and ears should be cleaned frequently. Teeth should be brushed every day, and twice yearly visits for dental cleaning are necessary.
Parson Russell Terriers are some of the most active dog breeds that you can find. Fun-loving, active and incredibly feisty, this breed can be rambunctious if left alone and bored. This breed needs an active and experienced pet parent, but has an immense amount of love and companionship to give.
THE MASTIFF
The Mastiff, also known as the Old English Mastiff is believed to have originated from the Tibetan Mastiff. This is an ancient dog breed that was developed for guarding and fighting. The Tibetan Mastiff and Neapolitan Mastiff are examples of the ancient breeds.
Brief History
The British Mastiff, known as the AKC Mastiff, is also an ancient breed. This breed originated from Mastiff-type dogs called draft animals, known as tinker dogs. Their ancestor, the Molossus, was recognized 5,000 years ago. They were commonly used for pulling heavy tools on their backs for their owners.
The ancient dogs were muscular dogs used to turn wheels to draw well water as well as herd cattle and oxen. The most important task of the ancient day Mastiff was to guard and protect family, a role that remains unchanged today. This breed is dedicated to being the best family guard dog!
Other aggressive breeds were used for hunting and baiting large animals. But these puppies were typically raised amongst cows and cattle in order to train them to protect them from wolves and other prey. They have been used in South African farms for protection against wildlife, and terrorism. Today this breed is a popular choice for families living in rural areas. They are wonderfully sweet family dogs.
Physical Features
This is a large, powerful dog breed in both height and build. This breed combines grandeur with good nature. They are intelligent, not excitable, but affectionate towards their pet parents. This breed requires plenty of human contact and a high–quality diet. They’re best suited to a home where there are opportunities for exercise.
Their heads are rectangular-shaped, with short muzzles and small, V-shaped drop ears. This breed has a broad, dark, nose, and brown eyes with a smooth, short coat. Their coloring is typically fawn-colored, apricot, or brindle, with fawn or apricot as the main color. They have dark facial masks.
Average Height:
27.5 – 30 inches
Average Weight:
Males: 160-230 pounds
Females: 120-170 pounds
Life Expectancy:
8-10 years
Temperament
This breed is best described as heroic, calm and very loyal. They’re also extremely confident and easy-going. They make great protectors and are kind with children.
Mastiffs seem to assess every situation before acting. They know how powerful they are and don’t act without reason. They make great family dogs and love to feel like part of the brood. This breed should never be left to live outdoors, but instead pet parents should enjoy and involve their dogs in as many family activities possible. By doing so, these dogs become serene and docile, yet still make great family guard dogs.
Mastiffs need to feel that they belong to a family and will only protect and defend those that they respect and have bonded with.
They do well with positive training starting at puppyhood. Owners should start socializing them around 4 weeks old. They do best if they’re introduced to different people, other animals and children from puppyhood. They enjoy dog parks, dog beaches, long hikes and some organized canine sporting activities.
Special Needs
These dogs aren’t satisfied if left at home with nothing to do. This breed will need to have a job like protecting your cattle, children, or home; or going to dog training classes and shows.
The Mastiff is born with a guarding instinct, and a truly sensitive nature. It’s recommended not to use the traditional training methods like Schutzhund, as they will destroy a Mastiff’s mellow temperament, turning them into aggressive dogs that will become impossible to live with.
This breed needs plenty of socialization, training, and needs to keep busy. They need to stay fit and healthy, because they have a tendency to become overweight. Apartment living is not recommended.
Possible Health Concerns
The Mastiff is an active dog breed that may be susceptible to:
Hip Dysplasia is a hereditary developmental disease. HD occurs when the hip joint fails to develop properly. In Mastiffs with HD, the head of the thigh bone does not fall into the hip socket. The imperfect fit results in the joint becoming loose and unstable. This leads to osteoarthritis.
Progressive Retinal Atrophy (PRA) is the name for a group of diseases that cause degeneration of the retina. This will include inherited abnormalities of the light-sensitive cells.
Hypothyroidism a deficiency of the thyroid hormone, and can cause weight gain in Mastiffs, as well as constipation, and cold sensitivity.
Exercise
This dog breed needs regular exercise and plenty of off-leash runs.
When they’re younger they shouldn’t play with larger dogs. As puppies, they enjoy playing so much that they may forget how big the other dog really is. Make sure to protect your Mastiff puppy from injury when he is playing with other dogs.
Because this breed goes through growth spurts, they often become out of balance. Their hindquarters may grow higher than their front, thus shifting their weight load. They may place their front feet down incorrectly trying to compensate for being out of balance, putting them at risk for numerous injuries.
Nutrition
Since this dog is prone to obesity, owners will need to keep portion control in mind. Veterinarians can help determine how many calories this dog needs each day, and will help address any weight issues they may have. It’s important not to elimiate vial nutrition in the process.
This breed needs encouragement to eat slowly, which will also help to reduce digestive problems and bloat. It’s a good idea to use a Slow Feeder, which comes in different sizes.
Grooming
The Mastiff’s short coat is easy to groom. During heavy shedding that occurs twice yearly, extra grooming will be needed. Daily brushing with a rubber mitt or medium bristle brush will aid in removing loose hair, and in keeping their coats healthy and shiny. Nails need to be trimmed regularly.
Because this is a low energy breed, they make a great addition to any home. Socialization, positive dog training, and maintaining the correct diet with plenty of exercise will keep your Mastiff happy and healthy.
HEALTHY FOOD FOR PETS
Pets are loyal buddies. They don’t only provide companionship and friendship, they also provide security and they work as guides for the sick, elderly and the physically-challenged among others. Your pet can only remain healthy and in prime shape when they enjoy a healthy body and a stable mind.
VACCINES FOR PETS
Vaccines are laboratory prepared substances acquired from killed or weakened forms of a causative agent of disease for the purpose of building the immunity of the body against infectious diseases. Puppies or kittens acquire passive immunity through lactation from the mother’s milk as well through the placenta. With time this immunity decreases and vaccinations are necessary to build the bodies immunity (active immunity). Most of the diseases vaccinated against are incurable, highly infectious and often lead to death.