The length varies from 8 to 12 inches. Guinea pigs may be black, gray, brown, yellow, or white with either dark or red eyes. These animals may also have a piebald or even three-toned coloration. Like other rodents, the guinea pig has long incisors, which grow constantly to compensate for wear. Only the front surfaces bear enamel and, since the inner surfaces of the incisors wear down more quickly, they remain bevel-edged.
Guinea pigs are originally from Peru, South America.
Guinea pigs are gentle by nature, clean and easy to care for. However, they scatter their droppings indiscriminately, so their quarters require daily cleaning or the cage will become smelly. Because of the roly-poly appearance, small size, and comparative hardiness, guinea pigs are highly recommended as pets. They seldom bite, and will let people cradle them or carry them. Guinea pigs eat hay, corn, oats, barley, wheat, green vegetables, and rabbit pellets.