Well, Tucker and my son (6 1/2) are really good buddies. However, we got Tucker a really yummy bone from the pet store and when my son went to pet him, Tucker growled. Now I know this is normal behavior but what should we do? Tucker has treated Ian like a littermate and we've been trying to work on this. When we took the bone away, he didn't growl at us at all. He hasn't ever growled about the food bowl or toys with Ian, just this bone. Do we not get them anymore?