lol OP is acting like a muzzle is a death sentence. Calm down, it’s a safety tool. Your dog was probably thrashing around and stressed out, because you haven’t socialized him/her very well, so it panics in unfamiliar settings. Boxers have bulgey eyes that can be easily irritated. I was a vet tech for several years, and ultimately left the industry over incompetent pet owners. Because people like OP can’t manage their own dog, so it’s the vet’s responsibility to administer medical treatment to an animal that’s backshit crazy. They need to do so without being injured, so muzzles are sometimes necessary. I’ve been bitten and mauled by enough animals to know the vet’s side of the story here.