Researchers say the pups "appear to be doing well."
Gigantor was one of four wolves that escaped last month.
The 4-week-old wolf's howl is not quiet.
The Voyageurs Wolf Project called it "fascinating," showing that wolves in northern Minnesota clearly know how to hunt fish.
The board voted to allow 200 wolves to be harvested for a shortened February season.
He heard his 65-pound dog "screaming bloody murder" and then saw the wolves chasing her.
This is the first time the Voyageurs Wolf Project has evidence of a wolf eating a pup from its own pack.
The Park Service is trying to introduce more wolves to the island.
The National Park Service confirmed they'll add 20-30 wolves to the island by 2023.