The term "Small Animal Internal Medicine Residency" refers to a specialized training program for veterinarians who want to focus on the medical care of small animals, such as dogs and cats. This type of residency typically lasts two or three years and involves hands-on clinical experience in diagnosing and treating various internal medicine conditions in pets. Residents work under the supervision of board-certified veterinary internists to learn advanced diagnostic techniques, such as ultrasound, endoscopy, and radiology, as well as how to manage complex medical cases. Upon completion of a small animal internal medicine residency, a veterinarian may become certified by the American College of Veterinary Internal Medicine (ACVIM) in either dogs or cats, depending on their area of focus during training.