There are four friends in the forest. They are happy. The bird is a singer. She sings songs in the tree. The dog is an artist (艺术家). He draws pictures on the ground. Look at the monkey. He is so funny. He makes the animals happy. What does he do? He's an actor (演员). What does the black cat do? Look! He is patrolling (巡逻) with his handgun (手枪) by motorcycle (摩托车). He's a policeman.