I'm in camp with MMagis. They'll eat placenta, colostrum poop, and stillborns, but I never lost a live calf or cow to them, and we've had plenty of them around here, for years. I've seen 'em trot right through the middle of the herd, and the cows barely even give 'em a second look. Strange dogs... not so much.
I used to shoot at every one I saw, killed a few... but plenty of folks have found out the hard way that 'non-threat' coyotes keep 'bad actors' at bay... but if you kill off the non-threats, you could have really predatory ones move in.