Jack Russells are a favorite among horse owners, dog sports enthusiasts, animal trainers for film and television and people who love their fearless personality, boundless energy, entertaining antics and portable size. They love to be outside and require a lot of exercise everyday, making them a great pet for those who spend time outdoors. Jack Russells are athletic dogs that have an intense desire to hunt and thrive when kept entertained. These purebred dogs can be charming and affectionate, and, although highly trainable, you’ll need a lot of patience and are not usually suited to first time dog owners. The Jack Russell Terrier, also known as the Parson Russell Terrier, is a lively, independent and clever little dog.