Our little guy instinctively wants to heal others.
When his brother had an ear infection, I noticed it because Rocki made me aware of it. At first he kept licking his brother's ear. Whenever Bruiser went to scratch his ear, Rocki would jump on me and get my attention. Then he would run back to his brother and stare at me as if to say "do something!". If I didn't respond, he'd go through the process again - jump on me, then run back to his brother. After Bruiser was treated for the infection, Rocki would check his ear every day at intervals to make sure that the ear was in fact okay. He'd sniff, and then walk away. I learned to rely on Rocki's instincts when determining if the medication was actually working on his brother.
Last week I caught a very bad cold. As I was laying on the couch, Rocki jumped on me and began sniffing until he pinpointed the source of the problem - my nose. He tried to lick it to take the infection away. I stopped him from doing this but he is persistent - he sensed something was wrong and had to make it better. He kept trying to lick my nose no matter what. If I was sitting up, he tried climbing up my chest to get to it. When I pulled him off and set him down, he jumped up to the arm of the couch, made his way to the back and crawled along the top to come around from my shoulder in order to lick my nose.
I've never seen a dog so determined to take care of others. If you push him away, he will come back with more force to finish what he has started. At our home, we've just come to accept that Rocki is the nurse in residence.