I think dog is good friend of us.Some people like to have a pet dog.Dogs are very cute.They are very helpful for us.Example,when we are out,they can look after our house.They are also important to the blind man.On the one hand ,they can show the right way to the blind man.On the other hand,they can help the blind people keep away from danger.
一篇关于狗与人类关系的英文文章（60-80词）