Cats is a sung-through musical composed by Andrew Lloyd Webber, based on the 1939 poetry book Old Possum's Book of Practical Cats by T. S. Eliot. It tells the story of a tribe of cats called the Jellicles and the night they make the "Jellicle choice", deciding which cat will ascend to the Heaviside Layer and come back to a new life. The musical includes the well-known song "Memory" as sung by Grizabella.
Meanwhile, the Carré Theatre in Amsterdam, Netherlands, staged the musical in 1987 (with Ruth Jacott as Grizabella[196]), 1988 and from 1992 to 1993.[197] Cats made its French debut at the Théâtre de Paris from February 1989 to April 1990,[120] with an original cast that included Gilles Ramade as Old Deuteronomy.[198] The show was also produced in Zürich at the ABB Musical Theatre from 1991 to 1993,[199] while a production by Joop van den Ende and the Royal Ballet of Flanders was staged at the Stadsschouwburg Antwerpen in Belgium in 1996.[200] An English/German-language "Eurotour" production also toured the region from May 1994 to December 1995.[174]
^ 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.
The musical returned to the West End in 2014 for a planned 12-week limited run at the London Palladium. Beginning on 6 December, the revival starred Nicole Scherzinger as Grizabella, and featured the original creative team, with direction from Nunn, choreography by Lynne and design by Napier.[62] Lloyd Webber was also involved and rewrote "The Rum Tum Tugger" and "Growltiger's Last Stand" for the revival.[101] The run was later extended through April 2015 and an additional 100,000 tickets were released, with Kerry Ellis replacing Scherzinger as Grizabella.[68] The musical returned once again to the London Palladium for another limited run lasting from 23 October 2015 to 2 January 2016, starring Beverley Knight as Grizabella.[102]
Niacin is an essential vitamin for the cat; dietary deficiency can lead to anorexia, weight loss and an increase in body temperature.[119] Biosynthesis of niacin occurs by metabolism of tryptophan via the kynurenine pathway to quinolinic acid, the niacin precursor. However, cats have a high activity of picolinic acid carboxylase, which converts one of the intermediates to picolinic acid instead of quinolinic acid.[120] As a result, niacin can become deficient and require supplementation.[121]
Cats have excellent hearing and can detect an extremely broad range of frequencies. They can hear higher-pitched sounds than either dogs or humans, detecting frequencies from 55 Hz to 79,000 Hz, a range of 10.5 octaves, while humans and dogs both have ranges of about 9 octaves.[80][81] Cats can hear ultrasound, which is important in hunting[82] because many species of rodents make ultrasonic calls.[83] However, they do not communicate using ultrasound like rodents do. Cats' hearing is also sensitive and among the best of any mammal,[80] being most acute in the range of 500 Hz to 32 kHz.[84] This sensitivity is further enhanced by the cat's large movable outer ears (their pinnae), which both amplify sounds and help detect the direction of a noise.[82]
If you’re a roleplayer with years of experience, Magical Kitties makes it easy to introduce your friends and family your favorite hobby. But if you’ve never played a roleplaying game before, Magical Kitties Save the Day makes it easy to try something new! Between The Big Adventure, “The Game Master’s First Adventure,” and the Kitty Tips! you’ll find throughout every book, it’ll be like we’re right there by your side the whole time.
Cats conserve energy by sleeping more than most animals, especially as they grow older. The daily duration of sleep varies, usually between 12 and 16 hours, with 13 and 14 being the average. Some cats can sleep as much as 20 hours. The term "cat nap" for a short rest refers to the cat's tendency to fall asleep (lightly) for a brief period. While asleep, cats experience short periods of rapid eye movement sleep often accompanied by muscle twitches, which suggests they are dreaming.[129]
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]
Public attitudes towards feral cats vary widely, ranging from seeing them as free-ranging pets, to regarding them as vermin.[208] One common approach to reducing the feral cat population is termed 'trap-neuter-return', where the cats are trapped, neutered, immunized against diseases such as rabies and the feline Panleukopenia and Leukemia viruses, and then released.[209] Before releasing them back into their feral colonies, the attending veterinarian often nips the tip off one ear to mark it as neutered and inoculated, since these cats may be trapped again. Volunteers continue to feed and give care to these cats throughout their lives. Given this support, their lifespans are increased, and behavior and nuisance problems caused by competition for food are reduced.[206]

Feral cats can live in forests, grasslands, tundra, coastal areas, agricultural land, scrublands, urban areas, and wetlands.[204] Their habitats include small islands with no human inhabitants.[205] The close relatives of the domestic cat, the African wildcat (Felis lybica) and the sand cat (F. margarita) both inhabit desert environments.[42] Domestic cats still show similar adaptations and behaviors.[103]

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]

Cats are similar in anatomy to the other felid species, with a strong flexible body, quick reflexes, sharp teeth and retractable claws adapted to killing small prey. They are predators who are most active at dawn and dusk (crepuscular). Cats can hear sounds too faint or too high in frequency for human ears, such as those made by mice and other small animals. Compared to humans, they see better in the dark (they see in near total darkness) and have a better sense of smell, but poorer color vision. Cats, despite being solitary hunters, are a social species. Cat communication includes the use of vocalizations including meowing, purring, trilling, hissing, growling and grunting as well as cat-specific body language.[7] Cats also communicate by secreting and perceiving pheromones.[8]