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Jack Russell/Shih Tzu mix
I've had my puppy for about a month & half now. He's almost 4 months old. I'm having a really difficult time getting him to stop biting. I'm not sure if he's playing or if he's being aggressive. He follows my son & I around & enjoys biting our feet, pants, hands, whatever he can get to. What can I do better to get him to stop this behavior? He also tries to jump on & bite anyone that comes in the house.