My ankle and back are sore today. As I was putting the dogs to bed, someone, I think it was Ollie, hopped up on a set of doggie stairs. I picked him up, hugged him and said "Oh, Thank You Ollie, I needed the help tonight."
When I turned around, another dog, Bitty, was waiting on the stairs. And so it went. Each dog hopped up, recieved his or her hug, and was tucked into bed.
Now of course, there is probably a scientific explanation, but I think they were motivated by both praise and altruism. They didn't know WHY I liked for them to get on the stair, but hey, if it made me so happy, then fine, they'd do it.
My eyes were misty as I tucked the last dog in. I really love those little guys.