To 9.prevent animals from becoming homeless,pet owners should take good care of their pets.Most pet doctors also suggest people make sure their pets have a special surgery(外科手术)，which prevents animals from having more 10.babies.And that reduces the number of homeless animals. 导航页导航页 To 9. __________animals from becoming homeless, pet owners should take good care of their pets. Most pet doctors also suggest people make sure their pets have a special surgery (外科手术), which prevents animals from having more 10. __________. And that reduces the number of homeless animals. prevent babies