Bears:

• Citizens United for Bears (CUB)
• Idaho Coalition United for Bears (I-CUB)

Birds:

• The Aviary
  - information resource for all bird species
• World of Birds
• Duck Rescue Homepage

Cats:

• The Meditative Cat
• Persian Cat Rescue
• The Tiger Foundation
• Tiger Information Centre

Dogs:

• The DogPatch
  - information and resources on dogs.
• Greyhounds Anonymous
• Greyhound Protection League
• Puppy Lifeline
• Rottweiler Rescue of Mid-Michigan
• WWW Woofs

Ferrets:

• Californians for Ferret legalization
• Ferret World
• Zen and the art of ferrets

Horses:

• The Abaco Wild Horse Fund
• The Donkey Sanctuary
• HorseAid Homepage
• Kaimanawa Wild Horses Information
• Swedish Animal Welfare Society for Horses
  - in Swedish.

Pigs:

• PIGS, a Sanctuary

Primates:

• The Great Ape Project (GAP)
• Heather's Wild World of Animals
  - all about primate care.
• The Monkey Sanctuary
• Primarily Primates

Rodents and Rabbits:

• Gerbil Information Page
• The Guinea Pig Hutch
• House Rabbit Society

Seals:

• IFAW Seal Campaign

Sharks:

• Natal Sharks Board

Whales and Dolphins:

• The Dolphin Alliance
• European Cetacean Organisation
• Whale-Watching Web

General:

• Amazing Animal Facts
• Animal Network
  - On-line animal magazines, such as Dog- and Cat-Fancy
• EE-link's Endangered Species
• Pet Ring
• Wildlife Web
  - a beautiful site featuring information and photo's of many animal species