Gerbils are popular pets because they are affordable and easy to take care of. These burrowing rodents originally come from Africa and Asia. While there are many types of wild gerbils, most pet gerbils are Mongolian gerbils bred in captivity. Wild Mongolian gerbils are generally gray, but selective breeding has created a variety of colors, such as white, black, and gold. With gentle handling, pet gerbils can become tame and enjoy being held. They...