Aortic Thromboembolism occurs in felines and is an occlusion of a systemic artery by clot. This can occur secondary to heart disease or cancer.

Anemia can be divided into blood loss anemias, decreased production of red blood cells, or destruction of red blood cells.

Anal Sac Diseases includes inflammation, infection, impaction, or cancer of the anal sacs. The pair of anal sacs are positioned on either side of the anus. The specific anatomy of an animal's anal sacs, loose stools, and food or environmental allergies may be related to the pathology of the anal sacs.

Cataract is an opacity of the lens of the eye. A cataract can be present at birth, develop at a young age, develop at an older age, or occur secondary to other disease.

Diabetes Insipidus is when a dog or cat has an insufficient amount of antidiuretic hormone (ADH) secretion (central diabetes insipidus) or insufficient action of ADH (nephrogenic diabetes insipidus).

Aural Hematoma is a fluctuant fluid-filled swelling on the inside surface of the pinna as a result of head shaking or scratching of the ear.