The baby black bear cub might weigh barely as much as a loaf of bread today, but once he turns into a fully grown adult, his weight might skyrocket up to 250kg. In addition, he will be flipping boulders weighing over 140kg with a single paw. That said, if you’re scared of meeting one face-to-face, it’s best to avoid forested mountainous regions. Black bears could easily be Olympic gold medalists in both climbing and swimming. They love scaling trees and taking refreshing showers. Of course they do—there are plenty of unsuspecting fish in that muddy water.