Twice he’s attacked strangers, one was a cyclist, who got off his bike and put the bike between himself and Murphy and talked sweetly to him. If he’d done anything else, I never would have been able to teach Murphy not to be afraid of cyclists! (This event, obviously, was totally my fault, twice he’s gotten away from me while I’ve had him in public parks trying to socialize him - the other time he backed a pedestrian into a tree). After 3 years, I took him to Petsmart this weekend and he fearfully rode around in a shopping cart, He growled at one Great Dane, and didn’t threaten anyone/anything else - a huge breakthrough!