A photographer captured two young grizzlies playfully engaging with each other on film. Things start sweet and get a little bit serious.

When a 13-year-old boy started down a zipline in Costa Rica, the last thing he expected was to “clock” a sloth straight in the face.

Tom Waddington is solo rowing the north Atlantic Ocean, but he wasn’t so solo when pilot whales swarmed him. He loved and hated it.

A baby moose was stuck between a dock and the float of a seaplane. A Good Samaritan wanted to help, but mama moose wasn’t having it.

A mountain biker’s recent video of him riding a barely there ridge in the Italian Dolomites is terrifying, and we can’t stop watching.