We seem to have these ideas that each animal species is an island that only seeks the company of its own kind, and that each has one defining characteristic that will accurately predict its behavior.
Large predators such as lions and bears, for example, are usually portrayed as hungry and dangerous.
Nature shows love to focus on this aspect, of course, because chasing and devouring makes a much sexier show than loafing around, which is what large animals spend a lot of their time actually doing.
While their ferocious aspect does indeed need to be attended to when meeting large predators on their own turf, I love coming upon exceptions to such obviously limited generalizations.
Polar Bear Meets Dogs: I Come in Peace