I dont hunt deer with dogs but do hunt bear and coon with hounds. If I caught ANYONE threating my dogs I would treat them the same way I would someone threatening my kids. The states that I hunt bear in it is leagle to cross private property in order to retrive your hounds if they cross private property and tree something on it, that doesnt mean you get to shoot it but you have the right to go there to get your dogs. The only person that can leagally put a dog down, even if it is harrassing wildlife, is a law enforcement officer, such as a game warden.