Dog puts chew bone in my lap

When I give my dog a chew bone, he will take it and chew it for a moment and then return to me an place it in my lap? Why does he do this?

You went out & made a kill & brought him some (the chew bone). He starts eating, but notices you don't have one. You're a senior pack member. He's giving you his food because the senior dog should eat before him.
   
This is very noble & thoughtful of him.
   
Pat him on the head, tell him he's a good boy, & give him back his bone. He needs to understand that you don't want his food.
   
If you're nibbling on something at the time, he may not feel the need to give you his bone.

Oh, that's such a good boy then! I think I will let him continue in case we are ever lost in the woods together and have to share our food. :-)
   
Thanks!
   
P4P