A dog is a kind of animal. It's also one kind of pet. Most of them are welcomed
by people. Many people keep the dogs for pleasure. They give food to the dogs
everyday and build the houses for them. Dogs are good friends of people. They
can help people in many ways. They can look after the house. If we go out with
a dog at night, we will not feel lonely. So we should be kind to them and take good
care of them.