I have an 8 month labradoodle. He’s such a good boy and listens to us most of the time but whoever we run around and even on walks he jumps up and is constantly biting. He’s been doing this for 4 months now. The biting in the walks has decreased but in the house it hasn’t. I can’t even walk away from him cause his grip is so strong. He was enrolled in puppy classes for 3 months but those have ended. And he goes to day care once a week he also get a 2-3 walks a day. Can someone tell me if there is a solution or if this is just a phase.