Answer:
Because the crocodile found a new house to live.
Step-by-step explanation:
In the story called "the story of doctor Dolittle" the crocodile acts wild and savage because the crocodile wanted to live with Dr. Dolittle. He knew that Dr. Dolittle's house was a very good place to live in. Besides, the crocodile didn't want to be at the circus men. Maybe they have made him do things that he didn't want to do. In Dr. Dolittle's house, the crocodile found a very good place to live.