Loose Pony

It's dark when I drive up to the gate. It's closed as normal, but something doesn't look right. What's that white and black hairy creature doing behind it? "Oh, Tornado, you're a naughty pony". He rushes off towards the house as though he understands. I drive in and close the gate behind me in a rush. Tornado trots back to the house and gives me a happy snort when I put him back in his paddock.