What distinguishes a mole from a vole?

The distinguishing feature of a mole compared to a vole is the presence of external ears. Moles are adapted for a burrowing lifestyle, which has led to the evolution of their bodies to be more streamlined for digging. This adaptation includes the absence of external ears, which minimizes the risk of injury as they navigate through their underground tunnels.

In contrast, voles have prominent external ears that are visible and are not designed for an underground lifestyle in the same way. Their physical characteristics, including the presence of external ears, reflect their different habitat preferences and behaviors. Understanding these anatomical differences is important for accurately identifying these animals in their natural environments.