Let Teddy learn to respect his master.
If Teddy doesn't respect his master, he will attack him or even bite him when he does something wrong. If the dog doesn't correct it, don't give it food for a while. When it is hungry, it will naturally find it, educate it again, and give it food if it is obedient.
If Teddy has been trained to urinate in a fixed place before, he has to go against his master and urinate everywhere, which shows that he has no respect for you. First, be patient and teach it again. If you still don't listen, use food to induce. After several attempts, you will still compromise.
If teddy bites the carpet, shoes, etc. At home, it means that he has begun to disrespect his master, so he has to walk up to him and say, No! Don't hit it at this time, ignore it first, then teach it patiently and let it feel your kindness.