And they're off!
A video of dinosaurs went viral as a swarm of Tyrannosaurus rexes took to a Washington horse track on Saturday for a race. Video of the race has since gone viral.
After the video of the race was shared on Facebook, it has been shared more than 250,000 times.
Nearly two dozen dinosaurs participated in the race. Members of a pest control company dressed as the dinosaurs.
For the Emerald Downs Racetrack and Casino, it is part of a family-friendly day at the track.