The scientific name Felis catus for the domestic cat was proposed by Carl Linnaeus in the 10th edition of Systema Naturae published in 1758.[1][2] Felis catus domesticus was a scientific name proposed by Johann Christian Polycarp Erxleben in 1777.[3] Felis daemon proposed by Konstantin Alekseevich Satunin in 1904 was a black cat specimen from the Transcaucasus, later identified as a domestic cat.[38][39]
Even in places with ancient and numerous cat populations, such as Western Europe, cats appear to be growing in number and independently of their environments' carrying capacity (such as the numbers of prey available).[217][218] This may be explained, at least in part, by an abundance of food, from sources including feeding by pet owners and scavenging. For instance, research in Britain suggests that a high proportion of cats hunt only "recreationally",[218] and in South Sweden, where research in 1982 found that the population density of cats was as high as 2,000 per square kilometre (5,200/sq mi).[217]
Another poorly understood element of cat hunting behavior is the presentation of prey to human guardians. Ethologist Paul Leyhausen proposed that cats adopt humans into their social group and share excess kill with others in the group according to the dominance hierarchy, in which humans are reacted to as if they are at, or near, the top.[163] Anthropologist and zoologist Desmond Morris, in his 1986 book Catwatching, suggests, when cats bring home mice or birds, they are attempting to teach their human to hunt, or trying to help their human as if feeding "an elderly cat, or an inept kitten".[164][165] Morris's hypothesis is inconsistent with the fact that male cats also bring home prey, despite males having negligible involvement with raising kittens.[161]:153
Another unusual feature is that the cat cannot produce taurine,[note 1] with a deficiency in this nutrient causing macular degeneration, wherein the cat's retina slowly breaks down, causing irreversible blindness.[103] This is due to the hepatic activity of cystinesulfinic acid decarboxylase being low in cats. This limits the ability of cats to biosynthesize the taurine they need from its precursor, the amino acid cysteine, which ultimately results in inadequate taurine production needed for normal function. Deficiencies in taurine result in compensated function of feline cardiovascular and reproductive systems. These abnormalities can also be accompanied by developmental issues in the central nervous system along with degeneration of the retina.[118]
Preformed vitamin A is required in the cat for retinal and reproductive health. Vitamin A is considered to be a fat-soluble vitamin and is seen as essential in a cat's diet. Normally, the conversion of beta-carotenes into vitamin A occurs in the intestine (more specifically the mucosal layer) of species, however cats lack the ability to undergo this process.[121] Both the kidney and liver are contributors to the use of vitamin A in the body of the majority of species while the cats liver does not produce the enzyme Beta-carotene 15,15'-monooxygenase which converts the beta-carotene into retinol (vitamin A).[122] To summarize: cats do not have high levels of this enzyme leading to the cleavage and oxidation of carotenoids not taking place.[120]
Taurine is an essential amino acid found only in animal tissues and cannot be produced in sufficient amounts by the cat.[36] As it is an indispensable amino acid, it must be provided exogenously through the diet at 10 mg/kg bodyweight/day.[37] Kittens deprived of taurine can experience poor growth[36] and can result in retinal degeneration in cats.[38]
An event called the Jellicle Ball was referenced by Eliot in the poem "The Song of the Jellicles", while a cat version of heaven known as the Heaviside Layer was mentioned in one of his unpublished poems. Nunn expanded on these concepts by conceiving the Jellicle Ball as an annual ritual in which the cats vie to be chosen to ascend to the Heaviside Layer, thus giving the characters a reason to gather and sing about themselves in the musical. He also added the element of rebirth as a play on the idea that cats have nine lives.[1]

Cats is considered the quintessential megamusical, because it reconceived, like no other show before, theatrical space as an immense affective encompasser, that transforms the viewing experience into a hypercharged thrill-ride and the spectator into an explorer of new and challenging aural and visual sensations. Its unprecedented success paved the way for even bolder hyperspatial configurations, made the set designer a proper environment builder and raised light and sound design into the status of art in their own right. It also paved the way for the constant revolutionization of stage technology.[320]
^ Jump up to: a b Loss, Scott R.; Will, Tom; Marra, Peter P. (29 January 2013). "The impact of free-ranging domestic cats on wildlife of the United States". Nature Communications. 4. Article number 1396. Bibcode:2013NatCo...4.1396L. doi:10.1038/ncomms2380. PMID 23360987. We estimate that free-ranging domestic cats kill 1.4–3.7 billion birds and 6.9–20.7 billion mammals annually.
^ Jump up to: a b Driscoll, C. A.; Macdonald, D. W.; O'Brien, S. J. (2009). "In the Light of Evolution III: Two Centuries of Darwin Sackler Colloquium: From Wild Animals to Domestic Pets – An Evolutionary View of Domestication". Proceedings of the National Academy of Sciences of the United States of America. 106 (S1): 9971–9978. Bibcode:2009PNAS..106.9971D. doi:10.1073/pnas.0901586106. PMC 2702791. PMID 19528637.
Paul Dean is a writer. In addition to co-founding the board games site/show Shut Up & Sit Down and co-creating the latest edition of the Paranoia RPG, Paul has also contributed to or been featured in publications and outlets as diverse as The Telegraph, Eurogamer, IGN, How We Get to Next, The New Statesmen, The Guardian, RockPaperShotgun, and BBC Radio. (He’s even got a Cadbury’s Children’s Poetry Collection.) Later this year his scenario “We’ll Temporarily Have Paris” will appear in the Feng Shui 2 adventure anthology Have Fist, Will Travel.

Before you bring your kitten home, it’s best to designate a quiet area where the kitten can feel comfortable and safe. In this base camp, you’ll need to put a few essentials like food and water dishes, a litterbox (preferably one with low sides), and some comfortable bedding. Tip: Remember, cats don’t like their food and litterbox too close together. So place the food dishes as far away from the litter as possible within the space.
The cat (Felis catus) is a small carnivorous mammal.[1][2] It is the only domesticated species in the family Felidae and often referred to as the domestic cat to distinguish it from wild members of the family.[4] The cat is either a house cat or a farm cat, which are pets, or a feral cat, which ranges freely and avoids human contact.[5] A house cat is valued by humans for companionship and for its ability to hunt rodents. About 60 cat breeds are recognized by various cat registries.[6]