This winter has been a bit strange in the northland where I reside. Not much snow but enough cold temperatures to start freezing the lakes. The small lakes and ponds freeze up tight right away, ...

while muskrats have skinny, rat-like tails. Why do beavers tolerate muskrat freeloaders? It’s possible they recognize that the muskrats’ body heat makes the lodge warmer, according to one theory.

I am fascinated by a small, fuzzy critter that is found just about anywhere there might be a spot of water in the United States and Canada. Not to mention, it has mastered a wide range of habitats ...

While most mammals of the era were small, about the size of mice or rats, this species was about the size of a modern muskrat. Lead author Jaelyn Eberle, curator of fossil vertebrates at the CU ...