On your barks, get set, go! Dogs race for charity
7 May 2017 Last updated at 14:46 BST
It's not just Olympic athletes who set off on the starters pistol!
Hundreds of four-legged fundraisers have been running in a charity dog race in Thailand.
Watch how they get around the track specially designed to test their abilities and stamina, whatever their shape and size.
It's all to raise money for a hospital in the capital Bangkok.