In fact, the lupine reunion is a great reminder that domesticated dogs were wild wolves in the not-so-distant past, evolutionarily speaking. Our ancestors first befriended wolves about 15,000 to 30,000 years ago. (And yes, wolves wag their tails for many of the same reasons dogs do, the National Zoo's Lee Jackson told Smithsonian Magazine. Wagging, contrary to popular belief, can convey negative as well as positive emotions, too.)
Were these Norwegian wolves to have kin in the American midwest, they'd have good reason to be celebrating in 2015, too. The U.S. Fish and Wildlife Service recently reinstated protections for gray wolves under the Endangered Species Act, in states around the Great Lakes.