In the fourth episode, Dr. Pol and his colleague Dr. Brenda have their hands full with a variety of cases and several emergencies. Dr. Pol's schedule is filled with dog owners with very sick pets, including a frail puppy mill puppy; a dog with symptoms of the deadly virus Parvo; a beloved family dog with a chronic case of mange; and a French Bulldog who arrives at the clinic in critical condition after being hit by a car. Dr. Pol also treats farm animals, including a Boer goat who's lost weight after refusing to eat and a baby goat who may be blind after being kicked in the head by a horse. Dr. Brenda's cases include a show lamb with a rectal prolapse and a family pet pig whose been fighting a life-threatening disease. Episode 4 season 1.