The Jack Russell Terrier is a small terrier that has its origins in fox hunting; it is principally white-bodied and smooth, rough or broken-coated. The Jack Russell is an energetic breed that relies on a high level of exercise and stimulation and is relatively free from serious health complaints. They are sturdy, tough, and tenacious. They are high on energy and need to exercise at least 30 minutes daily. Their live for about 15 years. Predominantly white in coloration with black and/or tan markings, they exhibit either a smooth, rough or a combination of both which is known as a broken coat.