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Guinea Pig Compendium: Feeding and Nutrition
This site describes several common guinea pig foods, including hay, pellets, fruits, and vegetables. It also covers a guinea pig's need for Vitamin C, along with treats they enjoy.
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Guinea Pig Health: Marty the Cyber Pig
This site provides facts about guinea pig anatomy as well as nutrition. It also suggest a daily diet designed to keep a guinea pig healthy. Lastly, it offers descriptions of some common guinea pig illnesses and how to treat them.
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Guinea Pigs Online: Piggie Nutrition
Find helpful information and pointers on guinea pig nutrition.