Julian comes to the aid of a cow that is unable to stand up due to a condition called milk fever, caused by calcium deficiency. One false move in the treatment could put the animal's life in danger. Peter works to save the life of a three-week-old kitten with pneumonia. A Chihuahua has a worrying lump that requires surgery, a goose acquires a mating injury from an overenthusiastic partner, and a horse is not going to sit back and allow itself to be castrated.