Cat Island – Japan
It is an inhabited island, although the population is quite small (around 100 people, down from around 1000 people in the 1950s. It has become known as "Cat Island" due to the large stray cat population that thrives as a result of the local belief that feeding cats will bring wealth and good fortune. The cat population is now larger than the human population on the island. (A 2009 article in Sankei News says that there are no pet dogs and it is basically prohibited to bring dogs onto the island.