The longtime animal rights activist fronts the new film which shines the spotlight on drugs, breakdowns and slaughter behind the scenes at top stables.

Cromwell says, "I bet you that at least three horses will be killed on a racetrack today. Unfortunately, it's a safe bet, because every year, more than 1,000 die on racetracks across the United States."

In the new video, which features footage from PETA's five horse-racing investigations, Cromwell reveals many fragile, young horses are injured and killed before they ever even race, while thoroughbreds who survive are given "drug cocktails to enhance their performance and mask the pain of their injuries".

The actor adds, "Horse racing is not a sport. It's a blood sport. Until the cruelty ends, please don't go to the racetrack or have a Kentucky Derby party or watch the Triple Crown races on TV. And please, never bet on horseracing - because the only sure thing in horseracing is that the horses always lose."