Access to shelter and water, and can't hang himself.Soooo I know that tethering dogs is controversial, but getting a tie out for the puppy would be helpful. Shore up the chickens' run and work on training too. Those things take time though, so in the mean time a tie down would be a good option. Just make sure to put it somewhere the dog has access to the shelter, supervise initially to make sure the dog doesn't freak out, and don't leave the dog on it for extended periods of time. My family has used in when we're out in the woods to prevent the dog from chasing deer.