I have a Jack Russel and a Border Collie mix. No reason for the breed just my Son and Wife came home with a Jack. (600.00 bucks later.) The Mix is from a shelter and has been a fantastic dog. The Jack, I swear, understands the English language. He's incredibly smart. Sheds like no animal I've ever seen. I prefer mutts. Just seem to have less medical problems and breed type issues. Always wanted a Bernese Mountain dog........until I found out they only live about 8 years on average.