Yet while the video has prompted widespread outrage, and garnered international media attention, Hackenberger seems unfazed, and released a half-hour-long defense of his actions on the zoo's official YouTube channel on Monday.
In it, he justifies his training methods by saying he only hit the tiger twice, and that he was just cracking the whip to scare the tiger.
But the footage throws his account into question. At one point in the video Hackenberger, apparently panting from exertion, walks up to where the camera person sits, seemingly in response to questions about why he was hitting the tiger.
"He's prepared to go to more trouble to not do it, and that's why I got on him as hard as I did," he says. "You want to fucking go on the ring, Herb?"
Lions on leashes at Bowmanville Zoo.Facebook/The Bowmanville Zoological Park