What's wrong with eating cat, dog or monkey meat? would these make us sick?

Nothing.: As long as they are prepared properly, eating cat, dog, or monkey meat is no different than eating any of the meats that we more commonly consume. It is mostly societal custom that determines this. For example, most in India would not consume cow meat and in Peru eating guinea pig is fairly common.

Eating animals such as dogs, cats, horses and monkeys is common in many countries. Eating these animals doesn't usually harm health if properly prepared. However, some people object to eating these types of animals because it goes against their norms.