Feral cats are domestic cats that were born in or have reverted to a wild state. They are unfamiliar with and wary of humans and roam freely in urban and rural areas.[10] The numbers of feral cats is not known, but estimates of the US feral population range from 25 to 60 million.[10] Feral cats may live alone, but most are found in large colonies, which occupy a specific territory and are usually associated with a source of food.[206] Famous feral cat colonies are found in Rome around the Colosseum and Forum Romanum, with cats at some of these sites being fed and given medical attention by volunteers.[207]
Since kitten diets are very high in calories, ingredients must be implemented to ensure adequate digestion and utilization of these calories. Choline chloride is an ingredient that maintains fat metabolism.[42] Biotin and niacin are also active in the metabolism of fats, carbs and protein.[42] Riboflavin is also necessary for the digestion of fats and carbohydrates.[42] These are the main metabolism aids incorporated into kitten diets to ensure nutrient usage is maximized.
By 2012, the royalty payments from Cats to the Eliot estate had totaled an estimated $100 million.[294] Valerie Eliot used a portion of this money to establish the literary charity Old Possum's Practical Trust, and to set up the T. S. Eliot Prize which has since become "the most coveted award in poetry".[337][338] Cats also turned things around for the independent British publishing house Faber and Faber. As the publisher of Old Possum's Book of Practical Cats, royalties of up to £1 million annually[316] kept the then-struggling Faber afloat during the 1980s.[339] Moreover, the musical led to a surge in the sales of Eliot's book.[1] The success of Cats led Faber to turn another of their literary properties, Ted Hughes' The Iron Man, into a 1989 musical of the same name.[340]
To keep up with your kitten’s appetite, you’ll want to establish a daily feeding routine. The best way to ensure that you’re not under or over-feeding your kitten is to consult with you veterinarian about how much and how often to feed. At 3 to 6 moths of age, most vets recommend feeding your kitten three times a day. Once he’s reached six months, you can scale it back to twice a day. Keep stocking your pantry with kitten food until your baby reaches adulthood, 9 to12 months old. In addition, don’t forget to keep his water bowl fresh and filled at all times. But hold the milk. Contrary to popular belief, milk is not nutritionally sufficient for kittens and can give them diarrhea.

Cats has been produced by various professional regional theatre companies. Broadway Sacramento staged the musical in 2003 and 2009 at the Wells Fargo Pavilion. Both productions featured Ken Page reprising his role as Old Deuteronomy from the original Broadway production, along with Jacquelyn Piro Donovan as Grizabella and Jeffry Denman as Munkustrap.[283][284] A 2010 amphitheatre production at The Muny starred Page as Old Deuteronomy, Stephanie J. Block as Grizabella and Lara Teeter as Munkustrap.[285] The La Mirada Theatre for the Performing Arts staged the musical in 2014, with a cast that included Todrick Hall as Rum Tum Tugger.[286]
Cats are ready to go to new homes at about 12 weeks of age, when they are ready to leave their mother.[184] They can be surgically sterilized (spayed or castrated) as early as 7 weeks to limit unwanted reproduction.[185] This surgery also prevents undesirable sex-related behavior, such as aggression, territory marking (spraying urine) in males and yowling (calling) in females. Traditionally, this surgery was performed at around six to nine months of age, but it is increasingly being performed before puberty, at about three to six months.[186] In the US, about 80% of household cats are neutered.[187]
Before Old Deuteronomy can announce his decision, Grizabella returns to the junkyard and he allows her to address the gathering. Her faded appearance and lonely disposition have little effect on her song ("Memory"). With acceptance and encouragement from Jemima and Victoria, her appeal succeeds and she is chosen to be the one to go to the Heaviside Layer and be reborn into a new Jellicle life ("Journey to the Heaviside Layer"). A tyre rises from the piles of junk, carrying Grizabella and Old Deuteronomy partway toward the sky; Grizabella then completes the journey on her own.[i] Finally, Old Deuteronomy gives his closing speech to the audience ("The Ad-dressing of Cats") and the show comes to a close.
A combination of required nutrients is used to satisfy the overall growth and development of the kitten body, there are many ingredients that kittens do not require, but are included in diet formulation to encourage healthy growth and development. These ingredients include: dried egg as source of high quality protein and fatty acids, flaxseed as source of flaxseed oil which is rich in omega 3 fatty acid and aids in digestion, calcium carbonate as a source of calcium, and calcium pantothenate (vitamin B5) acts as a coenzyme in the conversion of amino acids and is important for healthy skin.[42]

^ Jump up to: a b Cameron-Beaumont, Charlotte; Lowe, Sarah E.; Bradshaw, John W. S. (2002). "Evidence Suggesting Pre-adaptation to Domestication Throughout the Small Felidae" (PDF). Biological Journal of the Linnean Society. 75 (3): 361–366. doi:10.1046/j.1095-8312.2002.00028.x. Archived from the original (PDF) on 9 June 2011. Retrieved 29 September 2009.

^ Jump up to: a b Ottoni, C.; Van Neer, W.; De Cupere, B.; Daligault, J.; Guimaraes, S.; Peters, J.; Spassov, N.; Prendergast, M. E.; Boivin, N.; Morales-Muñiz, A.; Bălăşescu, A.; Becker, C.; Benecke, N.; Boroneant, A.; Buitenhuis, H.; Chahoud, J.; Crowther, A.; Llorente, L.; Manaseryan, N.; Monchot, H.; Onar, V.; Osypińska, M.; Putelat, O.; Quintana Morales, E. M.; Studer, J.; Wierer, U.; Decorte, R.; Grange, T.; Geigl, E. (2017). "The palaeogenetics of cat dispersal in the ancient world". Nature Ecology & Evolution. 1 (7): 0139. doi:10.1038/s41559-017-0139. ISSN 2397-334X.
Stage parodies of the musical have also been mounted in the West End and Off-Broadway. CAT – (THE PLAY!!!), a one-man show written by Jamie Beamish and Richard Hardwick, is a dark comedy about the fictitious life of Dave, a cat who was fired from the original London production of Cats on opening night. Starring Gerard McCarthy as Dave and with choreography by Arlene Phillips, the musical premiered at the 2014 Edinburgh Fringe Festival;[346] it performed at various regional venues before making its West End debut at the Ambassadors Theatre in April 2017.[347] Katdashians! Break the Musical!, a parody mashup of Keeping Up with the Kardashians and Cats by Bob and Tobly McSmith, premiered Off-Broadway at the Elektra Theatre in June 2016.[348] All the song parodies of Cats were later removed after accusations of copyright infringement from Lloyd Webber's representatives, who claimed the songs were being used "to parody another subject matter entirely".[349] Other stage shows that satirise Cats include Six Degrees of Separation,[344] Angels in America,[293] and The Musical of Musicals (The Musical!).[350]
To date, little scientific data is available to assess the impact of cat predation on prey populations outside of agricultural situations. Even well-fed domestic cats may hunt and kill, mainly catching small mammals, but also birds, amphibians, reptiles, fish, and invertebrates.[155][210] Hunting by domestic cats may be contributing to the decline in the numbers of birds in urban areas, although the importance of this effect remains controversial.[211] In the wild, the introduction of feral cats during human settlement can threaten native species with extinction.[205] In many cases, controlling or eliminating the populations of non-native cats can produce a rapid recovery in native animals.[212] However, the ecological role of introduced cats can be more complicated. For example, cats can control the numbers of rats, which also prey on birds' eggs and young, so a cat population can protect an endangered bird species by suppressing mesopredators.[213]
After the overture, the cats gather on stage and describe the Jellicle tribe and its purpose ("Jellicle Songs for Jellicle Cats"). The cats (who break the fourth wall throughout the show) then notice that they are being watched by a human audience, and proceed to explain how the different cats of the tribe are named ("The Naming of Cats"). This is followed by a ballet solo performed by Victoria to signal the beginning of the Jellicle Ball ("The Invitation to the Jellicle Ball"). At this moment, Munkustrap, the show's main narrator, explains that tonight the Jellicle patriarch Old Deuteronomy will make an appearance and choose one of the cats to be reborn into a new life on the Heaviside Layer.
To aid with navigation and sensation, cats have dozens of movable whiskers (vibrissae) over their body, especially their faces. These provide information on the width of gaps and on the location of objects in the dark, both by touching objects directly and by sensing air currents; they also trigger protective blink reflexes to protect the eyes from damage.[66]:47
Cats are unusually dependent on a constant supply of the amino acid arginine, and a diet lacking arginine causes marked weight loss and can be rapidly fatal.[115] Arginine is an essential additive in cat food because cats have low levels of the enzymes aminotransferase and pyrroline-5-carboxylate which are responsible for the synthesis of ornithine and citrulline in the small intestine. Citrulline would typically go on to the kidneys to make arginine, but because cats have a deficiency in the enzymes that make it, citrulline is not produced in adequate quantities to make arginine. Arginine is essential in the urea cycle in order to convert the toxic component ammonia into urea that can then be excreted in the urine. Because of its essential role, deficiency in arginine results in a buildup of toxic ammonia and leads to hyperammonemia.[116] The symptoms of hyperammonemia include lethargy, vomiting, ataxia, hyperesthesia and can be serious enough to induce death and coma in a matter of days if a cat is being fed an arginine-free diet. The quick onset of these symptoms is due to the fact that diets devoid in arginine will typically still contain all of the other amino acids, which will continue to be catabolized by the body, producing mass amounts of ammonia that very quickly build up with no way of being excreted.[citation needed]

Kittens require a high-calorie diet that contains more protein than the diet of adult cats.[43] Young orphaned kittens require cat milk every two to four hours, and they need physical stimulation to defecate and urinate.[6] Cat milk replacement is manufactured to feed to young kittens, because cow's milk does not provide all the necessary nutrients.[44] Human-reared kittens tend to be very affectionate with humans as adults and sometimes more dependent on them than kittens reared by their mothers, but they can also show volatile mood swings and aggression.[45] Depending on the age at which they were orphaned and how long they were without their mothers, these kittens may be severely underweight and can have health problems later in life, such as heart conditions. The compromised immune system of orphaned kittens (from lack of antibodies found naturally in the mother's milk) can make them especially susceptible to infections, making antibiotics a necessity.[46]
Jason Bradley Thompson's illustrations and maps have appeared in Dungeons  & Dragons, Call of Cthulhu and many other roleplaying games. He has also worked as a manga editor for Viz, co-designer of the tabletop games Cartooner and Mangaka, a DMsGuild content creator, a comics artist (HP Lovecraft's Dream-Quest of Unknown Kadath), and a story artist on Minions: The Rise of Gru. His map of Hot Springs Island is nominated for a 2019 ENnie Award for Best Cartography. He is currently working on a Dreamland tabletop RPG. (Click here to see a full-size version of his previous cartography work as shown below.)
As well as being kept as pets, cats are also used in the international fur[238] and leather industries for making coats, hats, blankets, and stuffed toys;[239] and shoes, gloves, and musical instruments respectively[240] (about 24 cats are needed to make a cat-fur coat).[241] This use has been outlawed in the United States, Australia, and the European Union.[242] Cat pelts have been used for superstitious purposes as part of the practise of witchcraft,[243] and are still made into blankets in Switzerland as folk remedies believed to help rheumatism.[244] In the Western intellectual tradition, the idea of cats as everyday objects have served to illustrate problems of quantum mechanics in the Schrödinger's cat thought experiment.
^ Jump up to: a b Ottoni, C.; Van Neer, W.; De Cupere, B.; Daligault, J.; Guimaraes, S.; Peters, J.; Spassov, N.; Prendergast, M. E.; Boivin, N.; Morales-Muñiz, A.; Bălăşescu, A.; Becker, C.; Benecke, N.; Boroneant, A.; Buitenhuis, H.; Chahoud, J.; Crowther, A.; Llorente, L.; Manaseryan, N.; Monchot, H.; Onar, V.; Osypińska, M.; Putelat, O.; Quintana Morales, E. M.; Studer, J.; Wierer, U.; Decorte, R.; Grange, T.; Geigl, E. (2017). "The palaeogenetics of cat dispersal in the ancient world". Nature Ecology & Evolution. 1 (7): 0139. doi:10.1038/s41559-017-0139. ISSN 2397-334X.
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]