What is Happening in this Picture

In this picture, a monkey is wrestling a cat.  The monkey is wrestling the cat because the cat wouldn't let the monkey eat him. Monkeys are not supposed to eat cats.  The monkey's name is Momo.  He is three years old.  The cat is named Jo-Jo.  He is seven.  They are Wally's pets.  Wally is not a man; he is a monkey.