That sounds kind of irresponsible! I am so sorry for you!
I know this sounds a little crazy, but I put a leash on Angel when I take him out in our backyard - and it is fenced in! I think it is risky letting any dog outside these days! I was looking out my back door last week and a deer was by our hot tub eating the bushes out back just the outside of our fence.
I cannot imagine how upsetting that is!