Big Cat Photo Gallery: Small collection of high quality images taken by international wildlife photographer Mark Kostich.
Big Cats Online: Information pertaining to big cats, including history and evolution, conservation efforts, and behavior.
Cat Species: Taxonomic information from the Feline Conservation Center.
Cats, Plans for Perfection: National Geographic site has drawings, information, and photos of felines skulls, their muscle system, senses, coat, and behavior.
Cougar Run: A fan site including pictures of many of the big cats, and also a little information about them.
Fact Sheets on the 37 Species of Cats: Species profiles for all members of Felidae family, including images and range maps, from the International Society for Endangered Cats Canada.
Family Felidae: A discussion on the classification and characteristics of the Family Felidae by the Cyber Zoomobile.
Great Cats of the World: Lots of pictures of your favorite big cats from the Bridgeport Nature Center to help educate people on issues affecting endangered species.
International Society for Endangered Cats: Works for conservation of the smaller 28 species of wild cat -- field research, captive breeding and increased public awareness.
Jaguar Lady's Korner: Personal fan site with information and pictures of many species of big cats.
Taxonomic and Legal Status of Felidae: Contains information on the current and former classifications of members of the Family Felidae and also lists the common names.
The Cat Family: Facts and statistics on felines, from lions to the domestic cat.
vanAnnies Felidae Research: Information, images, and index of recent journal articles.
Wild About Cats: Nice site about captive bred wild cats. They're the ones that raised Shaka and Zulu from the infamous Mountain Dew commericals
Wild Cat Photographs: Photographs and commentary by Rico Leffanta of various wild cats including the ocelot, mountain lion, and jaguar.