So I posted about my dog opening windows. Clever enough. But I was astounded yesterday:
He'd escaped out of the front door and I'd managed to herd him back onto the driveway, where he ran behind my car. My car was reversed onto the drive.
I decided to wait because if I approached from one side, he could run down the other. So I waited..... and waited.
When I got fed up waiting, I crept up one side of the car, to see that he was stood still with his head down, listening for signs as to which way I was coming 
He'd obviously worked out that I couldn't approach from both sides at the same time.
Clever wotsit