It's likely these two (dog and boy) have a special bond. We had a dog when my son was quite small who were like that. My son would literally lay on the dog. Sometimes he'd fall asleep right on the dog as the dog was laying in her spot. They had an incredible bond and trust for one another.
This thread attracted the usual trolls, and anti-Palin trolls, they weren’t interested in Trig’s service dog.
Here is the Ellen DeGeneres show and a cute picture of a kid standing on dogs.
Scroll down and you will see more.
https://www.facebook.com/ellentv/photos/a.182755292239.124686.26012002239/10152602026212240/?type=1