If you'd had him since a pup and was now 4yrs old, and had never showed aggression before - all of a sudden for some reason he started growling and displaying it's teeth.
Only when he's eating chewing on his chew toys , or seemed to want his own way... e. g. he's not allowed on the couch but growls if I tell him to get down. can he be trained not to do this?
Most Helpful Girl
He thinks he's in charge. If you aren't experienced with this sort of thing, I would hire a professional trainer to fix the problem. When a dog threatens his own family, that's a serious problem (even more so than if he threatens strangers, , etc).1