根据短文内容和所给中文提示，用单词的正确形式完成以下短文。
Why are some animals pets and others lunch?
In some countries, dogs and cats are commonly considered as pets, while chickens, ducks, and ____(猪) are food. However, in some other countries dogs and cats are food, and the food animals are pets.
People ____(分开,将……分成) animals into several kinds to their own needs. For example, you may have____(朋友) who keep rabbits as pets. Some people ____(烹饪) rabbits as dishes. People treat a rabbit as a pet because it ____ (带来) them pleasure. They eat it, for they think it is a kind of meat. They kill it because they believe it is ____ (有害的) to plants or people.
People also treat animals differently based on their own cultures. Most of us have dogs as pets. Dogs live in our house, like a ____(成员) of the family. However, in some cultures, dogs are considered unclean. People____（几乎不）ever keep them as pets. In some parts of Southeast Asia, dogs are on the menu. ____（百万）of dogs are killed every year.
What's ____（正确的）and wrong in the way we treat animals?
