Public displays, where folks know about them weeks in advance and can take appropriate steps with regard to pets and livestock - fine. Otherwise - about as far from fine as you can possibly get. I've known a sheep run headlong into a fencepost and crush its skull, 50 steers run straight through an electric fence and over a hedge, and a gun shy Labrador still be a quivering jelly under the dining table the following morning. Yup, you're right, I loathe them.