References
Animals, a visual encyclopedia. Smithsonian. 2012. Pp. 74-77.
World of animals. Book of predators. Imagine publishing, 2014. Pp. 10, 22, 32, 64
World of animals Magazine. Imagine publishing, 2014. Pp. 52, 55-58.
Enciclopedia del mundo animal. Parragon, 2013. Pp. 24, 25, 46, 47, 51, 61, 62.
Alderton, David. The encyclopedia of animals. Chartwell books, Inc., 2009. Pp. 113-125, 128, 130.
Goodall, Jane. Hope for Animals and Their World: How Endangered Species Are Being Rescued from the Brink. Grand Central Publishing, 2009.
Brakefiel, Tom. Big cats. Voyageur Press, 1993.
http://en.wikipedia.org/wiki/Felidae
http://animaldiversity.org/accounts/Felidae/
http://www.iucnredlist.org
http://www.felineconservation.org/