Grass or hay can also be fed in addition to their commercial pelleted diet. A great way to supplement their vitamin C is by giving fresh fruits and vegetables. They need about 20 milligrams of vitamin C each day. Good choices for fresh vegetables and fruits include skinless melon, cauliflower stalks, carrots, celery, tomatoes, and apples. Water should be provided in an 8 oz.
Guinea pigs seem to do well in housing that provides at least two feet square of living space.
Wire floored cages are generally not recommended because they can get their feet stuck between them. This experience can be both painful and potentially dangerous to your Guinea Pig. In addition, even if the wire flooring is small enough that it will not allow the feet to slip, a guinea pig's feet are delicate and sensitive, and this type of flooring can still cause discomfort. Glass Aquariums are also not recommended because they are not designed to let air flow as freely as those cages designed for guinea pigs. An enclosure that allows good air circulation and has solid plastic or metal floors is best.