He is a year and a half.The other day i came home from wrk he bitt my daghter's friend's hand.They are teen's he just went to pet him he was going for his walk had to take him to a walk in clinic it was bad.I hope this won't happen again i do lott's of research on my dog.I also spend lott's of time with him he goes for 3 or 5 walks a day.Some time he barks at old ladies and little kids like a attack dog

[lil mutt]

That's sad. I hope that wont happen again. Maybe you need to socialize your pet more with other dogs and humans...

Thanx we will see what heppen's.

He got riled up somehow. Try to keep him away from dogs and then retrain him. Do you walk him on a leash? Do some basic obedience and "heel" training. There are lots of good places to find help.