句型What is it? It's a... — 英语阅读题

阅读短文，回答问题。 Tom and his sister Amy are in the zoo. They play a guessing game. Tom says, "It is a big animal. It is black and white. It likes bamboo very much." Amy thinks and says, "What is it? Is it a panda?" Tom says, "Yes, it is! It's a panda." Then Amy says, "Now I say. It is a small animal. It has two long ears and a short tail. It likes carrots." Tom smiles and says, "What is it? I know! It's a rabbit." They are very happy in the zoo today. Question: What is Amy's animal? Please answer in a full sentence with "It's a ..."