My dog is very bad with growling. He growls at us and if we move him from a spot he growls. I dont think he would ever snap at us but, he growls at strangers on the street too. There seems to be no rhyme or reason most of the time. He will growl and lick us at the same time. I know he must feel dominant to us in some way to be growling but, I dont know how to prevent this? Any suggestions?