Looking at this Jack Russells wall calendar, one is immediately drawn to the happy, bold, and energetic disposition these dogs warm hearts bring to every image. Exuberant, alert, and confident, the Jack Russell Terrier is a great companion. It was named for the Reverend John Russell, whose terriers were used to hunt foxes. Jack Russells are independent, but also very affectionate. This international version calendar features only Jack Russell Terrier images with undocked tails. Includes a free download of the DogDays ¢ app for the smartphone and tablet, which grants access to the world's most captivating dog photos and backgrounds, fun puzzles, and a calendar featuring your favorite furry friends.