What is the only hibernating canine?

The only hibernating canine is the Arctic ground squirrel, although it is not a true canine but rather a member of the squirrel family. Among true canines, the red fox is known to exhibit torpor in extreme cold, but it does not hibernate in the typical sense. Domestic dogs, wolves, and other canines do not hibernate. Therefore, while there are canines that exhibit varying levels of dormancy, none truly hibernate like some other mammals do.