Moles are unusual animals. Most species are highly adapted for digging, spending almost all their lives underground, making them vulnerable to predators when they have to venture onto the surface. One might think, therefore, that they would not have dispersed widely across the globe and that it should be easy to trace their evolutionary history..jpg)
Eastern mole
However, this is not the case. For one thing, moles are found across the Northern Hemisphere, in Europe, Asia, and North America. A million years is, after all, a very long time and moles have been around far longer than that - including some times when the Bering Straits were dry land.
