Loss of Appetite in Dogs

Anorexia in Dogs

Anorexia, as it applies to humans, has been in the news so much that most of us are aware of it on some level. Anorexia is a very serious condition causing an animal to refuse to eat totally and its food intake to decrease so much that it leads to drastic weight loss. Dog owners should consult a veterinarian immediately to identify the cause.

Symptoms

Fever
Pallor
Jaundice
Pain
Changes in organ size
Changes in the eyes
Distention of the abdomen
Shortness of breath
Heart and lung sounds are diminished

Causes

There are many potential causes which can be attributed to a dog not eating. For example, most diseases (including infectious, autoimmune, respiratory, gastrointestinal, bone, endocrine and neurological diseases) will cause a dog to avoid eating because of pain, obstruction, or other factors. Anorexia can also be due to a psychological problem, such as stress or changes in routine, environment or diet. Other causes include:

Aging
Cardiac failure
Toxicities and drugs
A growth (mass)

Diagnosis

The veterinarian will generally conduct a thorough medical history on your dog, including any changes in diet, environment, or routine. It will help if you have observed your dog's eating habits and identify any problems it may have picked up, chewing or swallowing food. The veterinarian will then conduct various tests including: