Viral Diarrhoea (Canine Parvo, Corona virus)
A dangerous and sometimes deadly (especially in puppies) intestinal disease). Some main symptoms are bloody diarrhea (often severe), fever, vomiting, lethargy, loss of appetite, rapid weight loss etc.
Read more about Parvo in dogs.
Read more about canine Corona Virus Infection.

Leptospirosis
A bacterial infection spread throughout the body, affecting the liver, kidneys, nervous system, eyes, and reproductive system. Some common symptoms are vomiting (bloody), fever with chills, muscle weakness, stiff gait, loss of appetite, dehydration, red gum etc.
Read more about Leptospirosis in dogs.

Canine Distemper
A contagious and fatal viral illness with no known cure which causes respiratory, gastrointestinal and nervous system problems like high fever, reddened eyes, runny nose, lethargy, anorexia etc. In the later stages of the disease, the virus starts attacking the nervous system and the dog may start having fits, seizures and even paralysis.
Read more about Canine Distemper.

Canine Hepatitis
An acute liver infection in dogs caused by canine adenovirus type-1 (CAV-1). Symptoms include fever, depression, loss of appetite, coughing, and a tender abdomen. Corneal edema and signs of liver disease, such as jaundice, vomiting, and hepatic encephalopathy, may also occur. Severe cases will develop bleeding disorders, which can cause hematomas to form in the mouth.
Read more about Canine Hepatitis.

Kennel Cough
Dogs catch kennel cough when they inhale bacteria or virus their respiratory tract. Bordetella is the most common bacteria responsible for this disease. The classic symptom of kennel cough is a persistent and forceful cough. It often sounds like a goose honk. Other symptoms include sneezing, a runny nose and eye discharge.
Read more about Kennel Cough in dogs.

Parainfluenza (Flu)
Canine parainfluenza virus is one of the causes of kennel cough, a contagious, cold-like condition that causes coughing and other symptoms in dogs like sneezing, gagging, nasal discharge and fever.
Read more about Parainfluenza in dogs.

Allergies
Just like human, dogs can show allergic symptoms when their immune systems start to recognize certain substances (allergens) as dangerous. Even though these allergens are common in most environments and harmless to most animals, a dog with allergies will have an extreme reaction to them. Allergens can be problematic when inhaled, ingested or contact a dog’s skin. As his body tries to rid itself of these substances, a variety of skin, digestive and respiratory symptoms may appear. An Allergic dog may also suffer from secondary bacterial or yeast skin infections, which may cause hair loss, hot spots, scabs or crusts on the skin.
Read more about Allergies in dogs.

Obesity
Obesity is a very common problem in dogs, it can be detrimental to the health of a dog. Dogs that are over fed, lack the ability to exercise, or that have a tendency to retain weight are the most at risk for becoming obese. The overweight pet has many added stresses upon his body and is at an increased risk of diabetes, liver problems and joint pain. Obesity develops when energy intake exceeds energy requirements. This excess energy is then stored as fat. The majority of cases of obesity are related to simple overfeeding coupled with lack of exercise. Certain groups of dogs appear to be more prone to obesity than others. Specific breeds, such as Labrador retrievers, Golden Retrievers, pugs and older dogs are particularly susceptible.
Read more about Obesity in dogs.

Eye Diseases
Dog eyes can be affected by several diseases. These can be minor illness such as allergies or secondary infections, or they can be severe infections in different parts of the eyes caused by bacteria, viruses, parasites and allergens. Similarly, non infectious dog eye diseases include conformational abnormalities, glaucoma, cataracts, opacity and atrophies. There are some inherited canine eye diseases as well, which damage a dog's retina. Dog eye cancers and dog eye tumors are the most severe type of eye diseases, and are considered to be fatal.
Read more about Eye Diseases in dogs.

Tick-borne Disease
Lyme disease, Anaplasmosis, ehrlichiosis, Rocky Mountain spotted fever (RMSF) and tick paralysis are some common tick-borne diseases diagnosed in dogs. With any of these diseases, co-infections with more than one type of tick-borne organism is possible, potentially altering the signs of illness in the affected dog. The prevalence of tick-borne disease in any particular region is dependent upon multiple factors, including the presence of associated intermediate hosts and tick vectors as well as elements such as weather conditions. Protecting your pets from ticks is an important part of disease prevention.
Read more about Tick-borne Diseases in dogs.

Hip Dysplasia / Arthritis
Canine Hip dysplasia (CHD) is a deformity of the hip joint that occurs during an animal's growth period. Many large breed dog owners have heard of it as large breeds are more prone to this condition than the smaller dog breeds. Hip dysplasia is an inherited condition resulting from an improperly formed hip joint. Because the joint is loose, the dog's leg bone moves around too much, causing painful wear and tear. It’s a genetic condition, though environmental and dietary factors also contribute to this problem. And while it tends to pop up in the bigger dog breeds like Great Danes, St. Bernards, Labrador and Golden Retrievers, and German Shepherds, dogs of all sizes and breeds are susceptible to CHD.

Some common symptoms:
If your dog shows signs of hip dysplasia, it will seem similar to the signs of arthritis – painful joints, difficulty moving, and general stiffness. It can occur in one or both hip joints.

• Bunny-hopping or swaying gait
• Weakness in one or both hind legs
• Pain hip joint / pelvis area
• Behavioural changes like difficulty rising, unwillingness to play or climb stairs, exercise intolerance, reduced activity levels etc.
• Audible clicking sound coming from hips while walking
• Shrinking of hind leg muscles (muscular atrophy)

Read more about Canine Hip Dysplasia.

Hormonal Disorders
Hormones are chemical messengers that have many different functions. Endocrine system diseases can develop when too much or not enough hormone is produced. A tumor or other abnormal tissue in an endocrine gland often causes it to produce too much hormone. When an endocrine gland is destroyed, not enough hormone is produced. Diseases caused by overproduction or excess of a hormone often begin with the prefix hyper. For example, in hyperthyroidism, the thyroid gland produces too much thyroid hormone. Diseases caused by a lack or deficiency of a hormone often begin with the prefix hypo. For example, in hypothyroidism, the thyroid gland does not produce enough thyroid hormone. Some common hormonal disorders in dogs are diabetes mellitus, hypothyroidism, cushing disease etc.
Read more about Hormonal Disorders in dogs.

Gastric torsion / Bloat
Gastric dilation and volvulus syndrome (GDV), more commonly referred to as gastric torsion or bloat, is a disease in dogs in which the animal’s stomach dilates and then rotates, or twists, around its short axis. A number of emergency conditions may result as a consequence of this gastric rotation, including progressive distension of the stomach, increased pressure within the abdomen, damage to the cardiovascular system, and decreased perfusion.

Symptoms of GDV include anxiety, depression, abdominal pain and distention, collapse, excessive drooling, and vomiting to the point of unproductive dry heaving. Further physical examination may reveal a rapid heart beat (tachycardia), labored breathing (dyspnea), a weak pulse, and pale mucus membrane.
Read more about Kidney Diseases in dogs.

Cancers
Cancer is a class of diseases in which cells grow uncontrollably, invade surrounding tissue and may spread to other areas of the body. As with people, dogs can get various kinds of cancer. The disease can be localized (confined to one area, like a tumor) or generalized (spread throughout the body). Cancer is a multifactorial disease, which means it has no known single cause. However, we do know that both hereditary and environmental factors can contribute to the development of cancer in dogs.

Some common symptoms of cancers may include:

• Lumps (not always malignant, but should always be examined by a vet)
• Swelling
• Persistent sores
• Abnormal discharge from any part of the body
• Restlessness/lethargy
• Rapid, often unexplained weight loss
• Sudden lameness
• Black, tarry stools
• Decreased or loss of appetite
• Difficulty breathing, urinating or defecating

Read more about some common types of cancers in dogs.

UTI / Kidney Diseases
When dogs get UTIs, they may strain or have difficulty urinating, it may be painful for them to urinate, and they may have blood in their urine. Breaking housetraining is another possible sign of a bladder problem. You might not know that there’s blood in your dog's urine unless you see a pinkish stain on the carpet where he had an accident. Or you may notice that when you’re gone, your normally well-behaved dog is peeing near the door and producing a large volume of urine. To get a diagnosis, your vet will need to analyze a urine sample for the presence of white blood cells, which signal infection, or crystals, which suggest that the dog may have bladder stones. A urinalysis is a start, but culturing the urine allows us to know for sure if there’s an infection and identify the bacteria causing it.

Pyelonephritis is a bacterial infection of the renal pelvis in the dog's kidneys. If pyelonephritis takes place, it is due to an impairment of the dog's ureteral movement, blood supply to the kidneys, or the flap valves found between the kidney and ureters. Pyelonephritis can also develop due to kidney stones or when microbes climb upward, spreading a lower urinary tract infection to the upper urinary tract. Blockage of an infected kidney or ureter can lead to more serious complications like sepsis, a bacterial infection of the blood.
Read more about Kidney Diseases in dogs.

Rabies
Rabies is a virus which usually affects the brain and spinal cord of all mammals, including dogs, cats and humans. This fatal disease is primarily passed to dogs through a bite from an infected animal. Unvaccinated dogs who are allowed to roam outdoors without supervision are the most at risk for this infection. Some common symptoms of a rabid dog are fever, hyper salivation (frothy), changes in barking tone, aggression, hydrophobia, seizures, paralysis. Timely vaccination is the only way to prevent a dog from getting rabies.
Read more about Rabies in dogs.