Brucella canis is a species of bacteria that primarily infects dogs. While it is the leading cause of reproductive disease in dogs world-wide, it is not common in pet dogs in North America.

Cats can fall ill or become injured from a variety of reasons. Many of the illnesses cats experience are caused by viral or bacterial infections.

Cancer in cats tends to be more aggressive than cancer in dogs. There are many different types of cancer in cats such as mammary cancer, skin cancer, and lymphoma.

Feline immunodeficiency virus (FIV) is an uncommon viral disease of cats, caused by a retrovirus similar to human immunodeficiency virus.

Hip dysplasia occurs when the hip joint develops in an abnormally loose manner, creating chronic instability in the hip joint.

Elbow dysplasia (ED) describes a group of developmental conditions which results in the bones of the elbow joint not fitting together perfectly.

Osteochonditis Dissecans (OCD) is a developmental condition where a flap of cartilage breaks off from the end of the bone, and lodges in the joint, triggering inflammation and pain. Osteochondrosis (OC) describes the abnormal development of cartilage which leads to OCD.

Arthritis is a general term referring to damage and inflammation of joints. Osteoarthritis (OA) in dogs is a chronic, progressive form of this disease resulting in pain and reduced mobility.

Legg-Calve-Perthes disease is a disease that causes degeneration of the femoral head spontaneously. It is also known as avascular or aseptic necrosis of the femoral head.

Dental disease is an umbrella term for a number of disorders that affect the teeth, gums, and tooth support structures. In cats, the most common forms are gingivitis, periodontal disease, and tooth resorption (FORLs).

In feline diabetes, the body’s cells do not respond to insulin, the major hormone that regulates cellular absorption of blood sugar

Heart disease in horses is a very serious condition. The heart is a vital organ of the body and it pumps oxygenated blood and nutrients throughout the body. Early diagnosis and treatment can manage the symptoms and delay or slow down the progression of the condition, however, left untreated it can be fatal.

Carpitis is inflammation of the soft connective tissues on the surface of the bones of the carpus of a horse. The horse carpus is the equivalent of the human knee joint. This inflammation can involve the fibrous joint capsule, synovial membrane, and associated ligaments and bones of the carpus.

Cancer is a group of diseases that causes changes in normal cell growth where cells begin to multiply chaotically. This multiplication of cells can form masses which can impede the normal function of the body.

Aspiration pneumonia is an infection of the lungs caused by inhalation of a foreign substance. It is more common in foals, but can be seen in horses of any age. 

Psittacosis, also known as parrot fever, ornithosis and avian chlamydiosis is a disease caused by the bacteria, Chalmydophila psittaci. It occurs over 450 species of birds worldwide.

Proventricular Dilatation Disease (PDD) is an incurable disease that affects the gastrointestinal and neurological systems of a variety of bird species. Proventricular Dilatation Disease (PDD) was originally called “Macaw Wasting Disease” and was first recognized and described in 1978.

Polyomavirus is a virus that belongs to the family Papovavirus. It can cause a wide range of illnesses in pet birds, from benign wart lesions to life-threatening disorders involving internal organs, feathers and skins.

Gout is a disorder where high quantities of uric acid are deposited in different tissues. It can cause kidney damage, rigid toes, swollen joints and neurological problems.

Candidiasis is a common fungal disease that occurs in birds when the yeast Candida albicans infects the digestive tract. It is normal for your bird if the bird has a small amount of candida albicans. It causes problem when the number of yeast become excessive.

Avian influenza is a viral infection also known as Bird flu. There are over a dozen types of bird flus, including two strains - H5N1 and H7N9. Most forms of the virus are limited to birds, however, both H5N1 and H7N9 strains have recently infected humans.

Fever, or pyrexia, is an increased body temperature, surpassing 102.5 °F (39.2 °C) in cats.

Head pressing is a behavior demonstrated when a dog compulsively faces a wall or corner and remains there without moving or appearing engaged in any kind of activity for a period of time.

Lethargy can be defined as having decreased energy and lowered levels of activity. It is a difficult symptom to identify in a cat, since cats typically are not highly active animals

Muscle tremors in dogs are involuntary, repetitive, rhythmic muscle movements.

As dogs get older, their muscles gradually begin to lose function and waste away in a process called muscle atrophy. It’s a natural side effect of getting older, but it can also result from inactivity after an injury or illness, like a broken leg. Here’s what you need to know about muscle atrophy in dogs.

Pale gums are identified when the normal light pink color of the gum tissues turn pale or white, indicating a serious underlying condition.

Sneezing is a common occurrence in dogs, and is not always indicative of a medical condition.

Sneezing is the body’s natural way of responding to irritants and inflammation by expelling air out the nose.

Canine hyperthyroidism results from the excessive production of thyroid hormones due to a functional thyroid gland tumor.