VOYAGEURS NATIONAL PARK, Minnesota — Beavers have poor vision but a great sense of smell. Over eons, their chief natural predator – wolves – have come to understand that, and have adopted appropriate hunting techniques. In a groundbreaking research project, a team from Minnesota's Voyageurs Wolf Project spent the past five years studying the tactics wolves use to increase their chances of success. In a new paper just published in the journal Behavioral Ecology, they document how wolves have evolved ambush hunting methods specifically tailored for catching and killing beavers. The ...