Source: http://www.thriftyfun.com/tf91343649.tip.html

Puppy is Aggressive When Playing

I have a 3 month pitbull/boxer that is sometimes calm and playful, but within minutes becomes aggressive. He bites and growls. At times he bites and growls and I cannot get him calmed down. I tell him "no" firmly and hold his head to get him to stop biting. He doesn't respond to words and he bites my knees. I cannot gain control. I need help or I may have to look for a new home for him.

By stephaniec3 from NJ

Source: http://www.thriftyfun.com/tf91343649.tip.html

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