From this story in the Duluth News-Tribune:
Fred Strand and his 1½-year-old golden retriever, Hank, were walking a trail near Brule last week when Hank stopped to check out a scent. "He was 20 or 30 feet ahead of me, sniffing the ground," said Strand, of Iron River. "Immediately after that, he started yelping and barking like he was in great distress. I quickly figured out what the issue was." Hank had been caught in a wolf trap, said Strand, who is a Department of Natural Resources wildlife biologist at Brule. The trap was a leg-hold trap with offset jaws, meaning that there was a gap between the jaws after it was sprung. Strand knew just what to do. He released the jaws enough that Hank could pull his foot loose.