Common dog illnesses can be deadly serious, or relatively mild..... and most of them are highly contagious. Learn about symptoms, treatment & prevention of canine diseases & keep your pet safe!
If your puppy or dog gets sick it's worrying, even frightening, and because he can't tell you how he feels (or what hurts) it can often be tricky to figure out what's wrong!
To make matters worse, a young puppy or un-vaccinated dog can get very ill, very fast and many symptoms can be the same in the early stages of both minor AND major illnesses.
Of course your pup is totally dependent on YOU to get him the help he needs to get better.
So it's hugely important to learn how to recognize the symptoms of various illnesses, diseases or conditions......... and to have a plan of action in place, just in case the worst happens. This page will help you do all of that!
Dog Illness Symptoms
There are a handful of symptoms of dog illnesses that crop up over and over again.
Sometimes they're a sign of something simple such as a tummy upset from
last night's raid on the kitchen trash, but they can also be the early
warning signs that a serious, even deadly, disease is taking hold.
If you're a first time dog owner it's almost impossible to know the difference, and even with years of experience 'under your belt' it's still very tricky.
I always tend to err on the side of caution and get a professional veterinary opinion if one of my 'babies' isn't feeling well and I'd strongly recommend that you do the same.
Taking a 'wait and see' approach MIGHT be okay, but it could literally cost your puppy his life if he has something serious like Parvo.I wouldn't advise taking the risk.
Here's a quick overview of the most common signs of dog illnesses that you might see in a sick pooch....
And here's a look at what some of these could mean....
Diarrhea - Vomiting - Lethargy - Fever
Runny nose - Eye discharge - Fever - Cough
Scroll down to learn more about how to diagnose & treat certain dog illnesses....
Parvo is an extremely contagious viral disease that attacks the intestines, lymph
nodes and bone marrow. Rarer variety can attack the heart resulting in
sudden death. Easily transmitted through contact with infected feces,
either directly or on shoes, hands etc. Black and tan breeds such as
Doberman Pinschers and Rottweilers tend to be especially vulnerable, as are Pitbulls.
This disease is probably the biggest threat to a young, unvaccinated puppy's health and is one of the dog illnesses that claims the most lives during those early months.
Symptoms include extreme lethargy, loss of appetite, and severe vomiting and diarrhea (often bloody) which results in dehydration.
is mainly supportive and relies heavily on intravenous fluids to
counteract dehydration and intravenous antibiotics to attack sepsis
Coccidiosis is one of the parasitic dog illnesses which affects the intestinal tract of
puppies (most often seen in pups between 2 and 12 weeks of age).
Caused by the presence of the coccidian protozoa. Transmitted through
feces. Many adult dogs and puppies are carriers of this disease but
don't show symptoms and eventually build up an immunity to it. If a
young puppy is stressed, or unwell, the disease can 'flare up' as a
S - include diarrhea, often pale grey
to white in color and very smelly! Vomiting, lethargy and loss of
appetite are common. These can be mild to severe.
is supportive, with fluids being given to combat dehydration. Plus the
use of a sulfa-based anti-biotic to treat the disease, usually a 5 - 7
Highly infectious viral disease that affects the intestines. Transmitted through feces.
S - include diarrhea, lethargy, loss of appetite and dehydration.
T - is supportive and concentrates on treating the dehydration.
Highly contagious viral disease. Can be transmitted through
discharge from eyes or nose, through the air, or on shoes, hands etc.
Affects the lungs, intestines and brain.
include runny nose or eyes, coughing, vomiting and/or diarrhea,
lethargy, loss of appetite. Can advance to include partial paralysis or
T - is basically 'supportive care' such as encouragement to eat, fluid administration and veterinary care for seizures.
Giardia is another of the parasitic dog illnesses, also sometimes known as 'Beaver
Fever'. Caused by protozoa Parasites called Giardia, which are found in
rivers, streams, lakes and other bodies of water that contain traces of
S - Many dogs with Giardia are 'a-symptomatic' which
means that they don't show any symptoms, but continue to 'carry' and
transmit the disease. However, the main symptom is diarrhea, which is
often watery and foul-smelling. Vomiting, weight loss and lethargy may also occur.
- antibiotics are required, and the most commonly used medications are
Metronidazole (known as Flagyl) and Fenbendazole (Panacur). Both are
effective, but your pup may need more than one round of treatment to
eliminate the problem. Giardiosis can be transmitted to humans, so avoid
swimming in water that could be infected, and follow excellent personal
hygiene precautions if your dog gets this disease.
contagious viral disease which affects the liver. Starts in tonsils,
spreads to lymph nodes, bloodstream and liver. Can be transmitted
through urine, feces and saliva.
S - are similar to Distemper. Severe cases can progress rapidly and cause sudden death.
T - is supportive care which may include IV fluids and medications.
This dog illness is a highly contagious bacterial infection which affects the respiratory system. Transmitted through saliva or nasal discharge.
S - include runny nose and a lot of coughing and sneezing.
in mild cases can just be supportive, but in severe cases or when
secondary infections are present (such as pneumonia) antibiotics are
Bacterial disease affecting the urinary system, including liver and kidneys. Mainly transmitted through infected urine.
include loss of appetite, vomiting, lethargy, fever. More advanced
symptoms include jaundice, increased thirst and dehydration due to
T - early antibiotic treatment can lessen the severity and/or duration of this illness.
Lyme Disease is a bacterial infection that's transmitted to your dog through the bite of an infected deer tick. Can affect the heart, kidneys and joints.
include swollen and/or painful joints, limping, lethargy. A 'bullseye'
type rash may appear at the site of the tick bite, but is unusual in
canine lyme disease.
T - is usually several weeks on antibiotics
A highly infectious viral infection of the respiratory system. Easy airborne transmission through coughing and sneezing.
S - include a runny nose, cough and fever.
T - is mostly supportive, with antibiotics being given for secondary infections.
One of the most well-known dog illnesses. A severe and usually fatal
viral disease that affects the brain and nervous system. Transmitted
through saliva. Once symptoms appear this illness is always fatal to
both dogs and humans.
S - are behavioral and
usually include unusual, irrational and frenzied aggression (if your dog
was very shy you may see a increased affection or acute shyness if
previously friendly). You may also see lack of co-ordination, seizures
and the classic foaming at the mouth.
T - There is no treatment for Rabies and the disease is always fatal.
Non-Contagious Dog Illnesses & Conditions
Sometimes your pet can get sick without having 'caught' something. There are too many possibilities to cover on just one page, but here are the most common dog illnesses that can cause your pup to be under the weather....
Dog allergies are pretty common and your pet can react to all sorts of things.
The most common triggers are flea saliva, environmental/seasonal allergens (dust, mold, pollen etc.) and dog food ingredients.
Symptoms of allergies in dogs:
These are usually skin problems such as intense itching, relentless scratching, habitual licking (especially at the feet/legs/belly), red irritated and even inflamed areas of skin.
Irritated ears and constant scratching or head shaking are also common.
These nasty parasites are transmitted by mosquitoes, and start out in your pet's bloodstream then migrate to his heart and other major organs.
Left untreated heartworm will cause heart failure and kill your dog.
Symptoms of heartworm in dogs:
These include lethargy, coughing, breathing difficulties, heart rhythm changes, and eventually collapse and death.
A Heartworm infestation takes about 6 months to show up and by the time it does your pet is already very sick indeed.
Prevention is absolutely critical in this illness, so make sure your puppy begins a monthly heartworm preventative as soon as you bring him home, and continue that throughout his lifetime.
Treating canine heartworm:
Treatment for a heartworm infestation is long, expensive and gruelling for your dog. It requires a lot of medication and complete rest.
Even then survival is not guaranteed.
More info on prevention and treatment... Heartworm
Also known as Juvenile Cellulitis, Puppy Pyoderma, Sterile Granulomatous Dermatitis or Lymphadenitis.
Luckily it's not a very common condition.
An autoimmune disease which usually appears suddenly in puppies under 4 months of age. May have a hereditary component as some breeds are predisposed to developing it.
It needs to be treated quickly to avoid serious, or fatal, consequences.
Symptoms of Puppy Strangles:
These start off with generalized swelling of the puppy's face, but the most noticeable symptom is extreme swelling of the lymph nodes under the jaw and around the neck.
As this progresses it looks as though the puppy is being 'strangled' by the swelling, hence the name. Painful pimples and pustules then develop over the head/muzzle/ears.
Swelling might occur in other lymph nodes and joints, pustules may spread across the body, plus a puppy could lose his appetite and/or have a fever.
Treatment of Puppy Strangles:
Treatment usually consists of corticosteroids to reduce the swelling and inflammation, and antibiotics to kill off any secondary infection that has set up in the affected areas.
If your pup has a severe case, other treatments might be needed, or the standard treatment may need to be maintained for a longer period.
'Pano' is a condition that is most often seen in medium, large or giant breed puppies.
It's basically inflammation of the bones, usually in the front legs and it affects puppies between 6 and 18 months old.
It's a self-limiting disease which means that the majority of puppies will grow out of it without any treatment and without lasting side effects.
Most owners call it 'growing pains', and just accept it as a fact of life for many big puppies.
Experts haven't come to any real conclusion as to what causes this condition but it could be infection, hormones or diet.
Symptoms of Pano in puppies:
Usually a puppy with Panosteitis will have some pain in his legs, and will limp intermittently.
It's usually worse in the morning, after rest, or at the beginning of a walk or play session. Then the puppy 'walks it off' and seems fine.
Usually a pup will suffer on and off for 3 - 6 months and then recover. Occasionally it can be longer.
Occasionally a pup will have a
fever, seem lethargic or lose his appetite as well. If this happens he
needs to be seen by a vet because treatment might be needed.
Treating Pano in puppies:
Most puppies recover fully without treatment and Pano is just a nuisance, but if your pup has a lot of pain or other symptoms then your vet might prescribe corticosteroids or other anti-inflammatory medications to help him feel better.
Having a sick pup is worrying, and getting him the care he needs to
get better may be very expensive, so it makes sense to try to prevent
your little guy or girl from getting sick in the first place.
Vaccinations are your number one warrior when it comes to protecting your pooch from contagious dog illnesses and diseases. Regular deworming, monthly parasite prevention, a good nutritious diet and the right amount of exercise all help too.
Of course, even with the best of care, accidents
and unexpected illnesses can (and do!) happen. Veterinary care isn't cheap, and
if your dog needs surgery or extended care, you could be looking at a
lot of money.
You can protect your pet, and your bank account, by getting pet dog insurance - this is basically health insurance for your pooch! It's not expensive, and can be a real life-saver if the worst happens.
Also, no matter what the subject, I always think that a good reference book
is worth it's weight in gold, and this is certainly true when you're
talking about dog illnesses and other canine health issues.
Here are a few of the best dog health books available, you'll feel better if you have at least one of them on your bookshelf....