参考如下：
Humans and animals living together harmoniously can add salt to life.However,keeping animals at home can pollute the environment and be quite noisy,what's worse,they may sometimes attack people.
百度教育团队【海纳百川团】为您解答
英语翻译人与动物友好相处,增添生活乐趣.但是会造成环境污染,并且声音吵闹,甚至伤人