Complex sentence: James also has to treat Tim Alton's prize pig who has gone off her feed, the Taverners' dog, Dilly, and he faces a dilemma when Mrs. Tompkins' budgerigar dies in his care.
Split into simpler sentences: James also has to treat Tim Alton's prize pig who has gone off her feed. He also faces a dilemma when Mrs. Tompkins' budgerigar dies in his care.