edit: Before I get a bunch of downvote nonsense, this is a serious answer. Dogs (especially big ones that bark when excited) are terrific home protection. No intruder is going to risk a tussle with a couple of big dogs hell-bent on protecting their home. Plus they're totally good with people they already know and trust arriving, even if we aren't there. All a camera will do is record the fact that you're being robbed.