Housing: Guinea pigs should be kept safe indoors and need as large a cage as possible, with room to exercise. Aquariums are not suitable, due to poor ventilation. Look for a cage with a solid bottom, as wire floors and ramps can injure guinea pigs' feet. Cover the floor with bedding such as Carefresh or Aspen shavings. Avoid pine and cedar, which contain harmful oils, and sawdust. The cage is best in a room where your pets can enjoy your company. Guinea pigs love a house or igloo to rest in.
Diet: A healthy diet is based on quality grass hay, e.g. Timothy, and guinea pig pellets, freely available at all times. Babies under 6 months need alfalfa hay. Look for plain pellets containing vitamin C but without seeds, nuts or colored treats. Also provide a cupful of mixed fresh vegetables and fruit, rich in vitamin C, daily. Parsley, Romaine lettuce, bell peppers and dandelions are good choices, with a piece of carrot occasionally. Remember to supply fresh water in a water bottle daily.
Cleaning: Spot clean soiled areas 2-3 times a week and scrub out the entire cage weekly, as well as food dishes and water bottles. Always rinse and dry the cage well before adding the bedding.
Fertility: Male guinea pigs can be sexually mature at three weeks old. Make absolutely sure of your pet's sex and keep males and females separate at all times to prevent unwanted babies. Due to the health risks, breeding pet guinea pigs is STRONGLY discouraged.
Health: Find a veterinarian specializing in exotic animals and experienced in treating guinea pigs before you need one. The following signs mean your pet needs URGENT veterinary care: not eating or drinking, lethargy, sneezing, wheezing, crusty eyes, fluffed up fur, diarrhea, blood in urine, loss of balance, tilted head, excessive scratching or hair loss.
Warnings: Penicillin-based drugs, commonly prescribed for other pets, are TOXIC to guinea pigs. Exercise wheels and balls can cause injury to guinea pigs and should never be used.
Guinea Pigs: A Complete Pet Owner's Manual, by Katie Behrend
Guinea Pig Care: www.guineapigs.info