I know, I know. It's not every day you see a Palomino on a fire escape! Olivia de Havilland used to open a window to get a bit of fresh air and that's when she discovered Golden Cloud would step out on the fire escape and practice yoga. The horse was pretty smart! Olivia was to ride Golden Cloud as Maid Marian in The Adventures of Robin Hood (1938). A short while after Olivia, Roy Rogers was preparing for his first film and wound up choosing Golden Cloud as his mount. Roy later renamed the horse, Trigger.
(Pretty much everything above is a fabrication other than Golden Cloud practicing yoga. I told you, he was a smart horse!)