Animals seeing themselves on the mirror for the first time

I think the only animal who reacted so aggressively was the bear lol. The other ones were just curious as to who's on that mirror, not having any idea that it's them. I mean, to be fair they don't have mirrors in the wild. Maybe some of the animals who reacted non violently on their reflection were the ones that often see themselves on the water reflection when they drink, like in a river for example.