A famous extreme climber BASE jumper, and all-round risk-taker Dean Potter has jumped off a cliff in Switzerland ... with his dog.
This dive from the cliff named Eiger made dog named Whisper the first dog to wingsuit BASE jump.
The animal spent the dive curiously peering around through protective eyeglasses from a backpack attached to the back of its owner. The dog not mind the altitude or the wind and showed no signs of fear or discomfort.
Upon returning back to earth, Whisper felt pretty excited.
This clip is a trailer to the When Dogs Fly documentary that is up for screening sometime later this year.