Gray wolves are known to snack on blueberries, but the animals do more than fill their own bellies. A new, serendipitous observation shows an adult wolf regurgitating the berries for its pups to eat, the first time anyone has documented this behavior.
Wolves have a well-earned reputation as skillful hunters with a taste for large, hoofed ungulates like deer and moose. But scientists are increasingly recognizing that these predators have an exceptionally varied diet, partaking in everything from beavers and fish to fruit.
In 2017, biologist Austin Homkes of Northern Michigan University in Marquette got a sense of just how important this mixed diet could be for wolves. A cluster of signals from a GPS collar on a wolf led Homkes to a meadow just outside Minnesota’s Voyageurs National Park. Homkes, who was studying the animals’ predatory and dietary habits, thought he was headed for a spot where the wolf had killed a meal. But it turned out to be a rendezvous site, with adult wolves bringing food to their no longer den-bound pups.