What is referred to by 'a dog pot ball'?

Based on the clue 'a dog named enzo narrates garth steins the art of ...', what is the answer? Based on the clue 'a dog named jip chews up the cookbook belonging to...', what is the answer? Based on the clue 'a dog named rover might be black or brown but this...', what is the answer? Based on the clue 'a dog of this breed became famous for saying yo qu...', what is the answer? Based on the clue 'a dog thats a mix of 2 breeds is called a mongrel ...', what is the answer? Based on the clue 'a dog this is something only canines can hear poli...', what is the answer? Based on the clue 'a dog with a short flattened nose or the short fla...', what is the answer? What is referred to by 'a dogs descent 8'?