Although I have never been able to keep a grazing muzzle on a horse — I tried one on Freedom to try to prevent cribbing — this pair has it down to a science! Freedom destroyed every cribbing muzzle I tried in under five minutes. Other horses just saw it coming and ran for the hills! Lord knows what Zelda would do if I tried one on her.
Teamwork

The only thing I can say is..damn. As in, curses, foiled again. And some folks think horses are stupid? Pffft.
Obviously they’re very good friends!
….Know the frustration….the only muzzle that’s worked for me (so far) is the “Flexible Filly Slow Feed Muzzle” by Thin Line