Big cat

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A tiger, the heaviest of all the cats

The term big cat is used to distinguish the larger cat species from smaller ones. One definition of big cat includes only the four species of cat in the genus Panthera: the tiger, lion, leopard, and jaguar. Members of this genus are the only cats able to roar, and this is sometimes considered a distinguishing characteristic of big cats. A more expansive definition also includes the cheetah, snow leopard, clouded leopard, and cougar. The roaring cats may also be distinguished from the other big cats by referring to them as "great cats".

Three of the four largest cats are members of the genus Panthera; the cougar is the fourth largest cat, exceeding the leopard in size. Some medium-sized cats like the Eurasian lynx may weigh as much as 30 kg (66 lb), but they are not considered big cats.

Despite enormous differences in size, the various species of cat are amazingly similar in both structure and behavior. All cats are carnivores and efficient predators. Their range includes the Americas, Africa, Asia, and Europe; Australia and Antarctica have no indigenous species of cats.

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[edit] Roaring

The ability to roar comes from an elongated and specially adapted larynx and hyoid apparatus.[1] When air passes through the larynx on the way to the lungs, the cartilage walls of the larynx vibrate, producing sound. The lion's larynx is longest, giving it the most robust roar. Only four cats have the physical structure of the throat needed for making the deep, loud, and resonant sound of a roar. They are jaguars, leopards, lions, and tigers.

[edit] Threats

The principal threats to big cats are habitat destruction and poaching. In the United States, 19 states have banned ownership of big cats and other dangerous exotic animals as pets, and the Captive Wildlife Safety Act bans the interstate sale and transportation of these animals[2]. Nevertheless, there are still an estimated 15,000 big cats kept captive in the United States, and only a small percentage of them are in accredited zoos.[citation needed] The remainder are in private homes and nonaccredited roadside zoos.

[edit] Species

The lion, a species in the genus Panthera

Family Felidae

[edit] References

  1. ^ Weissengruber, GE; G Forstenpointner, G Peters, A Kübber-Heiss, and WT Fitch (September 2002). "Hyoid apparatus and pharynx in the lion (Panthera leo), jaguar (Panthera onca), tiger (Panthera tigris), cheetah (Acinonyx jubatus) and domestic cat (Felis silvestris f. catus)". Journal of Anatomy 195–209. Anatomical Society of Great Britain and Ireland. doi:10.1046/j.1469-7580.2002.00088.x. Retrieved on 2007-05-20.
  2. ^ Pacelle, Wayne. "Captive Wildlife Safety Act: A Good Start in Banning Exotics as Pets". The Humane Society of the United States. Retrieved on 2007-04-01.

[edit] External links

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