Small Island In The Philippines Evolves 4 Different Species Of Worm-Eating Mice

Researchers have found four species of mice on Mindoro Island in the Philippines. All four of the mice species evolved from the same common ancestor in an area the size of Connecticut.

This makes the location the smallest place ever documented to have evolved new mammals.

Smallest Island To Support New Mammals

Researchers released a paper in the Journal of Biogeography which shows genetic analysis done on the mice in Mindoro Island reveals that they all share a single common ancestor. They were determined to find the smallest island that can support new mammals. The previous record holder of the smallest island to support new island is the Philippine island of Luzon.