What distinguishes a mole from a vole?

The correct distinction between a mole and a vole is indeed the presence of external ears. Moles, which are adapted for a subterranean lifestyle, typically have small or even absent external ears that enhance their streamlined body shape, allowing them to navigate through soil more efficiently. This adaptation serves to minimize dirt that could enter the ear canals while tunneling.

In contrast, voles, which are more rodent-like and do not spend their lives underground, possess prominent external ears. This trait is one of the key visual differences that can be easily recognized when observing the two animals.

While diet, size of front feet, and fur color may vary between these two species, they are not as definitive as the presence of external ears. Moles primarily eat insects, grubs, and earthworms, while voles primarily consume plant material and seeds. Examining the size of their front feet may offer some clues; however, the differences are subtle and less noticeable than external ear structure. The color of the fur can also vary and is not a reliable distinguishing feature, as both mammals can exhibit a range of colors. Thus, focusing on external ear presence provides a clear and effective means of distinguishing between a mole and a vole.