Grizzly bear kills and eats black bear in Banff

It's a "bear-eat-bear" forest in Banff National Park, says a wildlife expert, after a grizzly bear gobbled up a much smaller black bear.

They call him Grizzly Bear No. 122, according to CBC News, and in the wild a short drive from Calgary, he's earning a reputation as a fierce predator.

CBC reported last week that officials had closed the Sundance hiking trail after spotting a grizzly bear eating the carcass of an unidentified animal. The trail was reopened this week after the bear finished his meal, a black bear it most likely hunted and killed, Steve Michel, a specialist on human-wildlife conflict, told the National Post.

Michel estimated the Grizzly's weight at 650 to 700 pounds last year, and he said this bear has eaten a black bear in one other confirmed case, according to the National Post.

[ Related: Reporter’s bear safety advice becomes online entertainment ]

The black bear that became his dinner probably only weighed about 100 pounds.

He told the CBC cases of bears eating other types of bears might not be too unusual, saying he knew of four other recent cases.

The bear's visit to a trail that's popular among us humans has prompted reminders to be aware of bears, to make noise while in the forest and to stand your ground in the event of an encounter — don't run away.