Currently, cats outnumber dogs by 13.5 million in the US and their numbers continue to increase. Shelters all across the nation are reporting increases in the number of cats and kittens coming into their shelters. Numerous Pets Across America shelters saw an increase of 30% from 2005 to 2006 and is seeing a steady increase each year.
Many people believe that global warming is a key factor in the increase of the cat population. The president of the Pets Across America says that:
Cats are typically warm-weather, spring-time breeders. However, states that typically experience primarily longer and colder winters are now seeing shorter, warmer winters, leading to year-round breeding. Basically, there is no longer a reproduction lull with cat breeding cycles and unfortunately, it seems more people are bringing boxes of kittens into our agencies during winter now.