Following the closure of the original West End production, a nationwide tour embarked in 2003 with Chrissie Hammond starring as Grizabella, until Dianne Pilkington took over the role in 2006. Hammond reprised the role on tour again from 2007 to 2008. A UK tour of Cats launched in February 2013 at the Edinburgh Playhouse with Joanna Ampil as Grizabella, running through 2014 before transferring to the West End. In between its limited West End runs, the musical returned to the Blackpool Opera House Theatre in 2015, this time starring Jane McDonald as Grizabella. After the second West End revival, the production toured the UK in 2016 with Anita Louise Combe as Grizabella and Marcquelle Ward as Rum Tum Tugger.
Kittens develop very quickly from about two weeks of age until their seventh week. Their coordination and strength improves. They play-fight with their litter-mates and begin to explore the world outside the nest or den. They learn to wash themselves and others as well as play hunting and stalking games, showing their inborn ability as predators. These innate skills are developed by the kittens' mother or other adult cats, who bring live prey to the nest. Later, the adult cats demonstrate hunting techniques for the kittens to emulate. As they reach three to four weeks old, the kittens are gradually weaned and begin to eat solid food, with weaning usually complete by six to eight weeks. Kittens generally begin to lose their baby teeth around three months of age, and have a complete set of adult teeth by nine months. Kittens live primarily on solid food after weaning, but usually continue to suckle from time to time until separated from their mothers. Some mother cats will scatter their kittens as early as three months of age, while others continue to look after them until they approach sexual maturity.
Additionally, Cats was the first Broadway and West End show to capitalise on merchandising as a major revenue stream. Stalls were set up in the theatre lobbies to sell souvenirs ranging from toys and watches to coffee mugs, all of which were emblazoned with the cat's-eyes logo. The official Cats t-shirt became the second-best-selling t-shirt in the world in the 1980s, second only to the Hard Rock Cafe t-shirt. Merchandising has since become an important source of income for the industry.
Cats can synthesize niacin, but their breakdown exceeds the rate that it can be synthesized and thus, have a higher need for it, which can be fulfilled through an animal-based diet. Pyridoxine (vitamin B6) is required in increased amounts seeing as it is needed to produce amino acids. To continue, vitamin B12 is an AAFCO-recommended vitamin essential in the metabolism of carbohydrates and protein and maintains a healthy nervous system, healthy mucous membranes, healthy muscle and heart function and in general, promotes normal growth and development. Choline is also a AAFCO recommended ingredient for kittens, which is important for neurotransmission in the brain and as a component of membrane phospholipids. Biotin is another AAFCO-recommended vitamin to support thyroid and adrenal glands and the reproductive and nervous systems. Kittens also require riboflavin (vitamin B2) for heart health, pantothenic acid (vitamin B5), and folacin.
As well as being kept as pets, cats are also used in the international fur and leather industries for making coats, hats, blankets, and stuffed toys; and shoes, gloves, and musical instruments respectively (about 24 cats are needed to make a cat-fur coat). This use has been outlawed in the United States, Australia, and the European Union. Cat pelts have been used for superstitious purposes as part of the practise of witchcraft, and are still made into blankets in Switzerland as folk remedies believed to help rheumatism. 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.
The original Viennese cast included Ute Lemper who played Bombalurina, Steve Barton who played Munkustrap, and Robert Montano who played Pouncival. Pia Douwes was also a member of the cast from 1987 to 1989, covering several different characters including Grizabella. The Vienna production also performed limited runs at the Komische Oper Berlin in East Germany in 1987, and at the Moscow Operetta Theatre in the Soviet Union in 1988.
After the Jellicle Ball, Old Deuteronomy contemplates "what happiness is", referring to Grizabella. However, the cats do not understand him, so he has Jemima (or Sillabub, depending on the production), the youngest of all Jellicles, sing it in simpler terms ("The Moments of Happiness"). Gus – short for Asparagus – shuffles forward as the next cat to be introduced ("Gus: The Theatre Cat"). He was once a famous actor but is now old and "suffers from palsy which makes his paws shake". He is accompanied by Jellylorum, his caretaker, who tells of his exploits. Gus then remembers how he once played the infamous pirate captain, Growltiger a.k.a. the Terror of the Thames ("Growltiger's Last Stand"). Gus tells the story about the pirate captain's romance with Lady Griddlebone, and how Growltiger was overtaken by the Siamese and forced to walk the plank to his death.
Feeding a kitten isn’t as easy as grabbing a bag of cat chow at the nearest convenience store. Growing kittens need as much as three times more calories and nutrients than adult cats. That’s why it’s important to find a good quality food designed especially for kittens. A name brand food, formulated for kittens, is the simplest way to ensure that your kitty gets the proper nourishment without supplements. Also, check to make sure your kitten’s food includes a statement from the Association of Animal Feed Control Officials (AAFCO) displayed on the packaging, ensuring the food is nutritionally complete.
The musical also features an unusual amount of "group-description" numbers. According to musicologist Jessica Sternfeld, such numbers are usually relegated to the prologue and nothing more, as seen in "Another Op'nin', Another Show" from Kiss Me, Kate and "Tradition" from Fiddler on the Roof. Cats on the other hand features four Jellicle-defining songs: "Jellicle Songs for Jellicle Cats", "The Naming of Cats", "The Jellicle Ball" and "The Ad-Dressing of Cats". These numbers allow the cats to celebrate their tribe and species as a whole, in between the ones that celebrate individual members.
The scientific name Felis catus for the domestic cat was proposed by Carl Linnaeus in the 10th edition of Systema Naturae published in 1758. Felis catus domesticus was a scientific name proposed by Johann Christian Polycarp Erxleben in 1777. Felis daemon proposed by Konstantin Alekseevich Satunin in 1904 was a black cat specimen from the Transcaucasus, later identified as a domestic cat.