WHEN IT COMES TO THERAPY DOGS, the most important attribute they offer is a loving disposition... but then, they need training so their affection can be directed appropriately to those they visit... and this training can be offered by other dogs.
In a recent, interesting blogpost, (Psychology Today: Canine Corner, January 23, 2013), Stanley Coren was discussing the effectiveness of one dog modelling behaviour for another. He presented an interesting example of how St. Bernard dogs assist in saving lives of stranded and lost travellers: three dogs embark on a rescue with their human and a puppy running about watching the adults. Two dogs will lie one on each side of a found person, while the third accompanies the human back to arrange a rescue. This is how a young dog apparently learns the ropes.
So too, with Misty playing/teaching little Delaney (although Delaney is not so little as she was here...) I shot this video clip through a screen window, so apologies for its quality -- but here you see Misty very gently mouthing Delaney and Delaney responding in kind. The lesson: be gentle with your jaws. Much more effectively taught by a dog than a mom! BTW: the hole in the ground arrived after Delaney!