Air Bud never flew like this.

Dean Potter has already made headlines around the world for his BASE-jumping stunts, speed climbing and other outdoor adventure stunts. Now, he’s trying to make history by making his mini cattle dog, Whisper, the world’s most famous BASE-jumping dog.

Potter and his pooch star in the new documentary released this week “When Dogs Fly,” a 22-minute Vimeo short that follows the attempts to make Whisper soar over from a 13,000-foot peak in the Swiss Alps in a wingsuit and goggles while strapped to Potter’s back.

See the trailer here:

Do dogs want to fly, though? The question has already generated some controversy.

“Although both the dog and owner land safely, being strapped to a person’s back and dropped by parachute is likely to be a cause of significant stress and fear for the dog,” a spokesperson for Royal Society for the Prevention of Cruelty to Animals told Mother Jones last year.

Potter defended his extreme man’s-best-friendship in a blog post:

“Whenever I put on my wingsuit or pack my parachute, little Whisper nestles close and begs to come along,” he wrote, according to Mother Jones.

Whether Whisper is actually the first BASE-jumping dog is unclear — but she’s definitely the first to star in her own film. You can rent it for 99 cents on Vimeo.