^ Glen, A. S.; Dickman, C. R. (2005). "Complex interactions among mammalian carnivores in Australia, and their implications for wildlife management" (PDF). Biological Reviews of the Cambridge Philosophical Society. 80 (3): 387–401. CiteSeerX 10.1.1.452.7854. doi:10.1017/S1464793105006718. PMID 16094805. Archived (PDF) from the original on 22 September 2017.
Cats redefined musical theatre in the German-speaking part of the world, turning an industry which then consisted of repertory theatre towards privately-funded big-budget open-ended productions. The success of the Vienna and Hamburg productions sparked a "musical boom" in the region that saw numerous musicals being launched not just in Germany but also in countries like Switzerland. It also led to a "construction boom" in Germany as new theatrical venues were enacted all around the country. Germany has since grown to become the third largest musical market after the US and UK, with Hamburg as its "musical capital".
The original staging of Cats at the New London Theatre was considered revolutionary and "one of the first truly immersive theatrical experiences". Instead of a conventional proscenium, the theatre was quasi-in-the-round with a central revolving stage. Nunn and Napier had sought to create "an environment rather than a set", and around $900,000 was spent remodelling the New London in preparation for the show. This included mounting sections of the stalls onto the theatre's 60 ft (18 m) revolve such that the audience moved along with the stage. When the show was brought to Broadway, the Winter Garden Theatre was given a similar $2 million makeover; its proscenium stage was converted into a thrust, and a part of its roof was torn through to allow for the effects of Grizabella's ascension to the Heaviside Layer.
Beyond the megamusical, Cats also led the Broadway trend for musicals aimed at families and tourists, which would later take the form of the Disney Theatrical Productions and jukebox musicals. The marketing campaigns for the musical targeted family audiences at a time when this demographic was not a consideration in the industry. Composer Joe Raposo said of family musicals in 1986: "Cats is a wonderful proof of what an audience is out there, untapped. People do want a theatrical experience for their children." Thanks to its easily accessible spectacle, the original Broadway production also tapped into the then-burgeoning tourist boom in New York and its audience shifted increasingly towards foreign visitors in its later years. Billington also specifically traces the rise of the jukebox musical genre back to Cats, citing the latter's disregard for dramatic text in favour of an all-encompassing theatrical experience.
Cats are known for spending considerable amounts of time licking their coats to keep them clean. The cat's tongue has backwards-facing spines about 500 μm long, which are called papillae. These contain keratin which makes them rigid so the papillae act like a hairbrush. Some cats, particularly longhaired cats, occasionally regurgitate hairballs of fur that have collected in their stomachs from grooming. These clumps of fur are usually sausage-shaped and about 2–3 cm (0.8–1.2 in) long. Hairballs can be prevented with remedies that ease elimination of the hair through the gut, as well as regular grooming of the coat with a comb or stiff brush.
Lynne choreographed the original London production with a dance crew consisting of her assistant Lindsay Dolan, the dance captain Jo-Anne Robinson, and cast members Finola Hughes and John Thornton. The resulting choreography blends ballet, modern dance, jazz and tap, interspersed with acrobatic displays. Lynne also trained the cast to evoke the movement, physicality and behaviour of actual cats. These feline traits were incorporated into the movement and choreography so as to create an "anthropomorphic illusion". Lynne considered the 13-minute "Jellicle Ball" dance to be the crux of the show, noting that in order to work as a dance-driven musical, Cats "had to succeed there or die". She recalled the difficulty she faced in persuading Lloyd Webber to add the extended dance break, culminating in her and her dance crew having to dance all the parts in the "Jellicle Ball" to convince him.
^ Rayner, M. J.; Hauber, M. E.; Imber, M. J.; Stamp, R. K.; Clout, M. N. (2007). "Spatial Heterogeneity of Mesopredator Release within an Oceanic Island System". Proceedings of the National Academy of Sciences of the United States of America. 104 (52): 20862–20865. Bibcode:2007PNAS..10420862R. doi:10.1073/pnas.0707414105. PMC 2409232. PMID 18083843.
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. Cats can hear ultrasound, which is important in hunting because many species of rodents make ultrasonic calls. However, they do not communicate using ultrasound like rodents do. Cats' hearing is also sensitive and among the best of any mammal, being most acute in the range of 500 Hz to 32 kHz. 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.
Felines are carnivores and have adapted to animal-based diets and low carbohydrate inclusion. Kittens are categorized in a growth life stage, and have high energy and protein requirements. When feeding a kitten, it is often recommended to use highly digestible ingredients and various components to aid in development in order to produce a healthy adult. In North America, diets certified by the Association of American Feed Control Officials (AAFCO) are accepted as adequate nutrition, thus kitten diets should be AAFCO approved to ensure full supplementation. Key components of the diet are high fat content to meet caloric requirements of growth, high protein to meet requirements for muscle growth as well as supplementation of certain nutrients such as docosahexaenoic acid to benefit the development of the brain and optimization of cognition.
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.
Here in eight lines Eliot was describing an intensely recognizable character with powerful human resonances, while introducing the themes of mortality, and the past, which occur repeatedly in the major poems. We decided that if Eliot had thought of being serious, touching, almost tragic in his presentation of a feline character, then we had to be doing a show which could contain that material, and the implications of it. Furthermore, we would have to achieve the sense of progression through themes more than incidents.