This happened to me a few years ago. I arrowed a deer and he went running straight for the fence and into the neighboring property. I've known this guy for years so I simply called him from my stand and told him what had happened and to see if he would mind me going after it. I also wanted to make sure nobody was hunting there right now. (Nothing iritates me more than waking up early to hunt, get situated and a few hours later you see someone walking underneath you.) If someone ever calls meand asks to retrieve an animal I am also more than happy to go out and help them look.