Here are some great sites on animals and veterinary care:
VeterinaryPartner.com – part of the Veterinary Information Network. This site has information about small animal behavior, diseases and answers to general small animal health questions.
House Rabbit Society – This is a great site for information about rabbit care.
FIRST – information about ferrets
Ferret Rescue of Maine – Give a ferret a good home!
Caveymadness – a great source of guinea pig information
Humane Society of the United States – This site has a large amount of information on pet care.
The Pet Web Library (courtesy of Mar Vista Animal Medical Center in California)
Cat Health Links (courtesy of Cornell Feline Health Center)
Animal Planet – a great website for all kinds of information on many types of animals