Pocket Pitbull is a mixed dog breed-a cross of the American Pitbull Terrier and the Patterdale Terrier, also known as Miniature Pitbull. It's a small-sized dog breed at about 12 to 16 inches tall, weighing between 11 to 22 pounds. The lifespan of the Mini Pitbull is around 11 to 13 years.