I got a male that I was walking one night and this guy came up from behind us out of no where and he tried to grab the guy.I don't know what the guys intentions were.Same dog , had this kid come running at us with both his hands raised and was screaming and my dog didn't like that..He hit the end of the leash and let him know ,kid almost shit himself I'm sure...Same dog will let kids aproach him on the leash and let them pet him with no problems...He has never bit anyone..But had those 2 situations with him..He is fine with most dogs but he will go.