I have this little problem with a 2 yr old male i got as some what of a rescue, he is a hand nibbler and when I say nibbling I mean NIBBLING. He only does it when i put my hand down as to pet him or scratch his ears, well i guess any time my hands are near his head!!! At first i was not sure what to do as I have never had a dog do this. he has not been FF yet. he is getting a late start, so far he is showing me he has the goods to put the time in to training so I want to fix this ASAP. His obedience has has improved 150% sense i have had him for about a month. To start fixing this i put him at heel and let him calm down and start to rub him slowly at on the back of his head and try to work my way up to his ears if he tries to lean back and nibble I give a firm "NO" "LEAVE IT" with no physical correction and start over. Today he let me rub between his eyes and to the bridge of his nose while sitting calmly. Am I correct in my approach? What would cause this? Lack of attention by previous owner or some one slapping him in the head.
Open to suggestions, Jason