JRT about 12 weeks old. Bites, growls and does not listen!

by Lisbeth
(Sweden)

Hi, I got this puppy for 3-5 weeks ago and recently he has started to growl and bite.

When we are out walking and if we are returning home(or even in the middle of the walk), he starts to run and attempts to bite my shoes and pants(as he's growling/barking at me!). He also does this when we are at home. I know that he's teething and wants to bite everything, but its getting out of control. I say a stern NO, but he continues to bite and growl. Also he doesn't listen when I call him. Ive tried with a high voice, whistle for him, everything to take his attencion but he doesn't react!

Also I walk him several times a day for about 30-45 min everytime he has to go out and to what he has to do. I throw sticks that he can run and get, I pick up leafs he can try to get.
I thought that the longer hes out the calmer he should be, but it seems that its not working.

I really hope someone can help me! I want to get rid of these things before he starts to get more older or even more aggressive.