"Pride of Possession" 11 November 1978
James uses a hormone treatment on Roland Partridge's dog, Percy, with interesting results. His client's talent with a paint brush convinces James to arrange for his next subject to be Bill Ogilvie's prize bull. Ogilvie, however, loses faith when his bull appears to be uninterested in performing his duties. He is proved wrong. James visits Birch Tree Farm to see Charlie Rudd's new cow, Strawberry, with amusing results. Tristan treats Angela Farmer's dog, but he accidentally injects her instead of the patient.
Characters: Mrs Hall, Roland Partridge, Angela Farmer, Bill Ogilvie, Charlie Rudd, Maurice Rudd.