The cat (Felis catus), also called domestic cat and house cat, is a small domesticated carnivorous mammal. It is a member of Felidae, the family of mammals in the order Carnivora also colloquially referred to as cats. An obligate carnivore requiring a predominantly meat-based diet, it has retractable claws adapted to killing small prey species such as mice and rats. It has a strong, flexible body, quick reflexes, and sharp teeth, and its night vision and sense of smell are well developed. It is a social species, but a solitary hunter and a crepuscular predator. Cat communication includes meowing, purring, trilling, hissing, growling, grunting, body language, and scent marking. It can hear sounds too faint or too high in frequency for human ears, such as those made by small mammals. It secretes and perceives pheromones. Cat intelligence is evident in its ability to adapt, learn through observation, and solve problems. The domestic cat is the only domesticated species of the family Felidae. Advances in archaeology and genetics have shown that the domestication of the cat started in the Near East around 7500 BCE. Today, the domestic cat occurs across the globe and is valued by humans for companionship and its ability to kill vermin. It is commonly kept as a pet, working cat, and pedigreed cat shown at cat fancy events. Out of the estimated 600 million domestic cats worldwide, 400 million reside in Asia, including 58 million in China. About 73.8 million cats are estimated to live in the United States, and about 10.9 million cats in the United Kingdom. It also ranges freely as a feral cat, avoiding human contact. Pet abandonment contributes to increasing of the global feral cat population, which has driven the decline of bird, mammal, and reptile species. Population control includes spaying and neutering. The origin of the English word cat, Old English catt, is thought to be the Late Latin word cattus, which was first used at the beginning of the 6th century.[4] The Late Latin word may be derived from an unidentified African language.[5] The Nubian word kaddîska 'wildcat' and Nobiin kadīs are possible sources or cognates.[6] The forms might also have derived from an ancient Germanic word that was absorbed into Latin and then into Greek, Syriac, and Arabic.[7] The word may be derived from Germanic and Northern European languages, and ultimately be borrowed from Uralic, cf. Northern Sámi gáđfi 'female stoat', and Hungarian hölgy 'lady, female stoat'; from Proto-Uralic *käďwä 'female (of a furred animal)'.[8] The English puss, extended as pussy and pussycat, is attested from the 16th century and may have been introduced from Dutch poes or from Low German puuskatte, related to Swedish kattepus, or Norwegian pus, pusekatt. Similar forms exist in Lithuanian puižė and Irish puisín or puiscín. The etymology is unknown, but it may be an onomatopoeia from using a sound to attract a cat.[9][10] A male cat is called a tom, tommy or tomcat[11] (or a gib,[12] if neutered). A female is called a queen (or sometimes a molly,[13] if spayed).[14] Some sources write that queen refers solely to unspayed cats that are in an estrous cycle.[15] A juvenile cat is referred to as a kitten (also shortened to kitty[16][17]), a term interchangeable with the now-obsolete word catling in Early Modern English.[18] A group of cats can be referred to as a clowder, a glaring,[19] or a colony.[20]