With different populations of cats in different parts of the world, some genetic disorders may be seen in more commonly, or even exclusively, in some geographical locations. (icatcare.org)
These calculations are based on the average need for a large population of cats. (thenoseprint.com)
After just four years, no new kittens were born, and at the end of the study, the overall population of cats had decreased by 66 %. (alleycat.org)