I had a rott that howled but she really couldn't carry a tune. Sirens always got her going. I can't imagine a coyote or even a pack coming after such a powerful creature unless she was already seriously injured. I have two labs and I have observed the coyotes coming within 25 yards of them on a couple of occasions but the coyotes didn't seem all that interested in my dogs even with they were barking at them. I keep a .223 handy for such opportunities.
