故事中的核心词汇理解 — 英语阅读题

Read the short story and answer the question. 阅读短文，回答问题（可用简短英语或中文作答）。 Lily is in the park with her friend Sam. They see a small cat under a big tree. The cat can climb, but it cannot jump down. Sam is tall. He helps the cat come down. "Thank you, Sam!" says Lily. Then a bird flies to the tree. The bird can sing very well. The cat is happy and runs to the bird. They become new friends in the park. Question: What animal cannot jump down, and where is it at first?