The cameo is almost as memorable as his signature line - also about his well-known love for animals:
"Bob Barker reminding you: help control the pet population. Have you pet spayed or neutered!"
Barker, a strict vegetarian, has been involved in several animal causes for years - from the fight to stop Japanese whaling to saving big cats from circuses to, of course, setting up spay and neuter programs for cats and dogs.
Here's the original fight clip from "Happy Gilmore":