Episode 4 (S13E04)

Two brothers are anxious about their cow, which is exhibiting troubling symptoms and seek Peter's assistance to figure out what's wrong. Meanwhile, Peter faces a challenging visit to the Greens' farm, where Dusty, the beloved yet troublesome cat, has sustained an injury that won't be easy to treat. In another part of town, an animal enthusiast discovers a pigeon with a malformed leg and brings her to Julian, who opts to perform surgery on the bird.