The Oakley family's dog is in heat, and they'll have to guard her from a wandering hound with a reputation for impregnating all the females in town. Next, Dr. Oakley relocates two young bison to a new pen in the hopes of starting a more harmonious herd. The team finally treats a Sitka deer with a recurring limp, an old cat with a cough, and an alpaca-llama cross with an attitude.