The attack took place along the 33-mile long Chilkoot Trail, which crosses through the Klondike Gold Rush National Historic Park into Canada.
Kamchatka teenager Rodion Burakov distracted the bear long enough for his 13-year-old brother to run to safety.
Black bear sightings are becoming increasingly common in Connecticut as the animal's population grows.
The attack, which was reported to state troopers at around 7 p.m., ended after the person's hunting partner shot the animal.
The victim, whose name has not been released, was staying at Red Pine Island on Rainy Lake, close to the U.S. border. The attack occurred on September 1, police said.
The Sierra Madre homeowner's pet dog approached the mother bear's cub in the man's backyard, causing it to lash out. The man kicked the adult bear, which swiped at him in response.
Andi Bauer, 26, and Lara Booth, 23, were on a five-day expedition through the Carpathian mountains when a brown bear reportedly mauled the male hiker on the leg.
There are fears that the bear which bit a woman on her thigh could enter city limits.
"Pennsylvania's rifle deer season just ended and there were deer parts in close proximity," explained game warden Chris Krebs.
The two grizzly bears who killed an elk hunting guide near the border of Yellowstone and Grand Teton national parks were later euthanized.
It was an action "we don't condone," a wildlife specialist said.
An online fundraiser has been set up to help with the medical bills of the woman who was attacked while working in Montana.