In ideal conditions with no hunting and trapping, wolverines can muster a population growth rate of about 1.1. That means that after replacing their parents, only one new wolverine for every 10 ...

bears and wolves retreating from their kills at a wolverine's approach. Unfortunately, in the contiguous United States, these tough scavenger-predators are barely holding on. Trapping and habitat loss ...

Image by Peter Mather. A wolverine departs successfully fitted with a radio collar. In March 2016, I cracked open the lid of a stout wooden box on Alaska's North Slope and was met with a growl.