Our goat Arlene has learned that if we're sitting on the pond bench, she'll get petted. Oddly, though, she's come to associate the bench itself with the petting. So if we're standing nearby, she'll go rub against the bench to show us that she wants to be petted.
She's fairly strong, so the the bench is taking a bit of a beating.
She's knocked it over before doing this.
Unfortunately, we usually give her positive reinforcement by petting her when she does it.
Come to think of it...she's right. She does get petted when she rubs her head on the bench if we're around.
The people...not so smart...