What feature distinguishes kangaroo rats and riparian woodrats?

The feature that distinguishes kangaroo rats from riparian woodrats is that kangaroo rats are known for having tails that are covered in fur, which serve various functions such as balance and temperature regulation. This fur-covered tail is characteristic of kangaroo rats and is visually and functionally different compared to the tails of riparian woodrats, which may not have the same fur density or characteristics.

Kangaroo rats are specifically adapted to arid environments, allowing them to survive in desert habitats, whereas riparian woodrats typically inhabit areas near water sources like rivers and streams. While both types of rodents may be nocturnal, being active at night is not exclusive to either species and, therefore, does not serve as a distinguishing feature. Furthermore, while both could be classified as omnivores to some extent, their diets may vary, and they do not share a strict classification as herbivores. Hence, the fur-covered tail is the most specific feature that differentiates them.