My horse recently discovered that he can push gates open when I haven't closed them because I was doing something really quickly. It's as cute as can be... but I'd rather him not disappear into the great unknown! Lol Cute video!
Watch out..some horses get really good at being mischievious! Our mare, Lady, has learned to open gates, stall doors, untie lead ropes (and those of her buddies), and this year to turn the faucet on. All the gates now have a chain on them and the faucet handle is now safely tucked away when not in use.
You always have to watch them... they sure are smart!