We have two and we are having a problem with them not getting along together with each other, so we have decided to let one go before they hurt one other bad. He has never spent a night outside, doesn't like cats and male dogs. Heart worm free and just got his 3 year vaccination and all shots are up to date. We really hate to let him go, but we think it's the best for both dogs. He isn't a hyper Jack Russell, does love to dig Ground Moles and tree squirrels.