I have a 2 year old jack russel. It seems as tho he is always on edge either on a walk or at home. I have tried many things such as rewarding him when he is being calm and also lot of general training and exercise (training 30 mins a day and a 30 min walk) but nothing seems to work. I know jack Russell's are know for their energy but it looks as tho it is starting to annoy him as he can't seem to chill out. Please help with any suggestions on how to help.