Throughout history, mankind has made pets of many animals large and small, including hamsters, gerbils, ferrets, rabbits, birds, lizards, turtles, fish, horses, pigs, monkeys, ants, tarantulas, snakes, and others. Dogs top the list of pets that we tend to love, followed by cats in most cases. Of the millions of species of animals God created, only a very small percentage are chosen as pets. But that will change in the future.