How to Keep a Jack Russell Terrier Happy. The Jack Russell terrier is a sturdy strong breed which can sometimes be aggressive if not trained properly. Like all terriers, Jack Russells have lots of energy and need plenty of exercise to burn.
Enjoying the day at the beach
Jack Russells enjoying a stick.
Miniature Jack Russell Terrier Bitch Puppy, 20 Weeks Old
jack russell terrier with high alert expression.curiousity is one of their traits!