Hello- I have a 12 week old male bullmastiff, we brought home at 8 weeks. I need serious help with puppy biting! We have tried everything, from yelling "ouch", redirecting with chew toys, stern "no", "time outs" in crate, ignoring, etc. It seems to be getting worse. I'm trying to socialize him, but it's difficult because anytime someone comes near him, its "game on" with the nipping/biting. I have 4 kids, ages 5,7,12 and 14 and it's to the point where even the older two don't want to interact with him. ANY suggestions at this point are appreciated!!!