句型What is it? It's a... — 英语情景题

情景对话：Sam 和 Tom 在农场游玩，玩猜动物的游戏。请补全对话中所缺的句子。 Sam: Listen! There is an animal behind the tall grass. (1)________ Tom: Is it big or small? Sam: It is big, and it is black and white. It likes eating grass. Tom: (2)________ Sam: Yes, you are right! It gives us milk, too. Tom: Cool! I want to see it. Sam: OK! Let's go together.