The sex of kittens is usually easy to determine at birth. By six to eight weeks they are harder to sex because of the growth of fur in the genital region. The male's urethral opening is round, whereas the female's urethral opening is a slit. Another marked difference is the distance between anus and urethral opening, which is greater in males than in females.[15]
Domestic cats are generally smaller than wildcats in both skull and limb measurements.[58] Adult domestic cats typically weigh between 4 and 5 kg (9 and 10 lb),[48] although many breeds have a wide range of sizes, with male American Shorthairs ranging from 3 to 7 kg (7 to 20 lb).[59] Some cat breeds, such as the Maine Coon, occasionally exceed 11 kg (24 lb). Very small cats, less than 2 kg (4 lb), have been reported.[60] The world record for the largest cat is 21 kg (50 lb).[61][self-published source] The smallest adult cat ever officially recorded weighed around 1 kg (2 lb).[61] Feral cats tend to be lighter, as they have more limited access to food than house cats. The average feral adult male weighs 4 kg (9 lb), and the average adult female 3 kg (7 lb).[62] Cats average about 23–25 cm (9–10 in) in height and 46 cm (18 in) in head/body length (males being larger than females), with tails averaging 30 cm (12 in) in length.[63]
Besides Japan, Cats is also produced regularly in other parts of Asia. The region has hosted numerous English-language productions of the musical, beginning with a tour from 1993 to 1994 when it played in Singapore (with local actress Jacintha Abisheganaden as Grizabella),[248] Hong Kong and South Korea.[249] Cats returned to Asia from 2002 to 2004 when it visited Malaysia,[250] South Korea,[251] Shanghai,[252] Taipei and Beijing;[253][254][255] the 2004 cast included Slindile Nodangala in the role of Grizabella.[254] A touring company visited Asia again between 2007 and 2010, including stops in Taiwan,[205] Macau, and Thailand in 2007;[256] South Korea from 2007 to 2009;[257] China in 2008;[258] Singapore and Hong Kong in 2009 (with Delia Hannah playing Grizabella);[238][259][260] and Manila in 2010 (with Lea Salonga as Grizabella).[261] Cats toured Asia again from 2014 to 2015, making stops in South Korea, Singapore and Macau.[262] Two years later, another international tour was launched and is scheduled to run through 2020, with visits to South Korea from 2017 to 2018,[263] Hong Kong[264] and Taiwan in 2018,[265] China in 2018 (with Joanna Ampil as Grizabella) and 2019,[266][267] and planned stops in the Philippines and Singapore in 2019, and Malaysia in 2020.[267]
As of 2017, the domestic cat was the second-most popular pet in the U.S. by number of pets owned, after freshwater fish,[17] with 95 million cats owned.[18][19] As of 2017, it was ranked the third-most popular pet in the UK, after fish and dogs, with around 8 million being owned.[20] The number of cats in the United Kingdom has nearly doubled since 1965, when the cat population was 4.1 million.[21]