- Animal Health (36)
- Information about animal health and medicine, and veterinary clinics and hospitals.
- Birds (10)
- Sites about birds.
- Cats (179)
- Sites about cats only.
- Cats and Dogs (24)
- Some sites don't specialize in either cats or dogs, but feature both.
- Cows (77)
- Sites related to things bovine.
- Dogs (501)
- Sites about dogs only.
- Fish (12)
- Sites about fish.
- Fun and Silly (9)
- A site that has something goofy that doesn't fit well into any other category.
- Horses (13)
- Horses and things related to horses and riding.
- Humane Organizations (43)
- Animal welfare and rescue, humane societies, and other charitable organizations.
- Other Sites for Pet Lovers (23)
- Sites that are not pet related but may be of interest to people who love pets. (Family friendly only)
- Pet Products and Services (227)
- What you need for your pet -- or cute pet-related things to buy for yourself.
- Reptiles and Amphibians (1)
- Reptilian and amphibian sites.
- Small Mammals (17)
- Rabbits, gerbils, hamsters, guinea pigs, and other little furry critters.