Epilepsy [ In Nervous System ]
Epilepsy in dogs can be a primary, idiopathic, inherited disorder or secondary to previous head trauma or CNS infections. Idiopathic epilepsy is commonly found in breeds such as German Shepherd Dogs, Beagles, and Dachshunds. The most common sign recurring generalized seizures beginning at a young adult age.

Exocrine pancreatic insufficiency [ In Gastrointestinal Diseases ]
Exocrine pancreatic insufficiency is the inability to properly digest food due to a lack of digestive enzymes made by the pancreas. This disease is found frequently in dogs

Exophthalmos [ In Eyes ]
Exophthalmos is a normal condition in brachycephalic (short nosed) dog breeds because of the shallow orbit. However, it can lead to keratitis secondary to exposure of the cornea.

Eye proptosis [ In Eyes ]
Eye proptosis is a condition resulting in forward displacement and entrapment of the eye from behind by the eyelids. It is a common result of head trauma in dogs. Most commonly it occurs in brachycephalic (short nosed) breeds.

Facial nerve paralysis [ In Nervous System ]
Facial nerve paralysis is most commonly caused in dogs by trauma, otitis media, or as an idiopathic condition. Signs include an inability to blink, drooping of the ear, and drooping of the lips on the affected side, although in chronic conditions fibrosis occurs and the ear and lips may appear to be in an abnormal position.

False pregnancy [ In Urinary and Reproductive Systems ]
False pregnancy, or pseudocyesis, is a common condition in female intact dogs. Signs include swelling of the mammary glands, lactation, not eating, and "mothering" small objects.

Familial renal disease [ In Urinary and Reproductive Systems ]
Familial renal disease is an uncommon cause of renal failure (kidney failure) in young dogs. Most causes are breed-related (familial) and some are inherited

Fanconi syndrome [ In Urinary and Reproductive Systems ]
Fanconi syndrome is a type of renal tubule disease found in Basenjis. Findings include the inability to concentrate urine, and the presence of glucose, protein, and amino acids in the urine.

Fibrosarcoma [ In Cancers ]
Fibrosarcoma is a malignant tumor that most commonly occurs in the mouth in dogs, and less commonly in the skin, subcutis, and bones.

Flea allergy dermatitis [ In Skin ]
Flea allergy dermatitis is the most common skin disease of dogs in the United States. It is caused by sensitivity to flea saliva.

Fleas [ In Parasites ]
Fleas in dogs cause itching and hair loss. The most common flea in dogs is the cat flea, Ctenocephalides felis, followed by the dog flea, C. canis.

Florida keratopathy [ In Eyes ]
Florida keratopathy an eye condition characterized by the presence of multiple spots within both corneas. In the United States, it is found most commonly in the southeastern part of the country.

Follicular dysplasia [ In Skin ]
Follicular dysplasia is a genetic disease of dogs causing alopecia, or hair loss. It is caused by hair follicles that are misfunctioning due to structural abnormality.

Food allergy [ In Skin ]
Food allergy in dogs is commonly manifested as itching, especially of the face, paws, and the underside. Skin testing has proved unreliable, and a trial of a hypoallergenic diet is usually used for diagnosis.

Foreign body [ In Gastrointestinal Diseases ]
Foreign body is an object foreign to the body that becomes lodged in the gastrointestinal tract (or other part of the dog). Dogs are susceptible to gastrointestinal obstruction due to their ability to swallow relatively large objects and pass them through the esophagus. Foreign bodies most commonly become lodged in the stomach because of the inability to pass through the pyloric sphincter, and in the jejunum.