You really have to be firm with the jack russell breed. If not they will be telling you what to do instead of the other way around. When you find them chewing on something that he/she should not be, take over his/her favorite toy instead and he may realize that hey I have something fun to play with. Your JRT may still be cutting teeth as well. Never give up on your Firmness or they will outsmart you. I wish you much luck, they are wonderful pets once trained, I own one that is 3yrs. now.
Answered by Anonymous - 7/11/2012 10:38:01 PM