A、Cats. B、Dogs. C、Animals. D、Birds. AWhat did Dr. Li study?

M: Have you heard of the study of cats Dr. Li conducted?
W: Study of cats? No, I don’t like cats.
M: But have you heard the saying "A cat has nine lives"?
W: Really? What does it mean?
M: Nine of ten cats survive a fall of a high building.
W: Oh, it is so surprising! What else?
M: The study shows one cat fell from a flat on the 32nd floor and only lost a tooth.
W: Why can cats do so? Do they have anything special?
M: Cats have a well developed sense of balance. It helps them change position when falling so that they can land on their feet.
W: It’s so interesting. I begin to be interested in eats.