Xenon, an 8-month-old fennec fox, is not able to put any weight on her swollen front leg and Dr. T suspects Xenon has a broken wrist. Monkey, a two-and-a-half-year-old bush baby, is new to his family and has been self-mutilating his tail and needs Dr. K's help, and Marshmallow, a one-year old dwarf hamster, is the smallest patient of the day, having trouble breathing.