Classifing+Animals

You can't classify animals into color groups or it's not going to make sense.You can't classify animals into where they live because if you group a snake that lives in South America to North American snake then it won't really make sense.Domestic cats are called Felis which means cat.A Greek philosopher tried to group animals where they lived 2,000 years ago.The biggest Kingdom is the animal group which is over 1 million.