Dr. Lavigne must decide during surgery if a giant schnauzer can keep his ear; a poodle named Jay-Z with suspicious symptoms needs Dr. Blue's help; Dr. Ross removes tumors from a rat; the vets pose with pets for a calendar to help animals in Haiti.

Dr. Blue performs a difficult surgery on a Dalmatian being weighed down by a grapefruit-sized tumor on his head; Dr. Ross brings his family together to get a service dog for his brother Tedric, who has been suffering from seizures his whole life.

Dr. Ross closely examines a duck with a lump in his throat. Dr. Lavigne uses x-ray film during surgery in a very unexpected way, while Dr. Blue tries to uncover a guinea pig mystery at the clinic. Dr. Lavigne's wife joins a local roller derby team.