Ehem, not for barking, she’s a bit big and people here are afraid that such energetic and well nourished dogs will also “bite” people (children and older people are usually afraid of my Maltese, especially if he barks, they switch sidewalks) … not to mention that she had the cat fetish thing… chaising cats was her thing.
Once, she was chasing a cat, and the cat decided to turn around and hold his ground. A single slash with his claws was enough to turn the tables and the cat started chasing the dog instead…
I’m sure this awful dissappearing incident was part of the cats evil plan for revenge… an elaborate scheme to get the dog out of the way.
In summary, wearing the muzzle was to avoid trouble and calm the neighbors.