@mecob3 One of mine got muzzled at the vet during preop for a surgery on his ear because as the sedation started to kick in, he was howling and trying to bite everyone. He's never tried to bite, and he's been there a lot. They were surprised. As soon as he came to afterwards, he was back to his sweet self, albeit clearly not enjoying life. When I went to pick him up, he was sleeping next to the receptionist on her coat. "He just seemed so sad and lonely in the kennel." They spoil him rotten.
We also used to have to muzzle him for grooming. He's got some pretty bad trauma in the past about that from before we adopted him. He was so bad, professional groomers were recommending BE. So, he didn't go to them for over a year. We got a high velocity dryer and did it ourselves, sometimes 5 minutes at a time. He got lots of cheese, lots of praise, the ability to decide when it was over for now, and me singing to him, because he loves it. In March, he got a full professional grooming with no muzzle and was a perfect gentleman the entire time. He does have to be groomed by women only, except one specific guy who jokes it's because he's gay (the groomer, not my dog), but otherwise, the most he does is give them really sad looks. He excels at those looks, btw.
He used to be scared of strangers when on a leash outside. Now, he will greet them if I give him permission and get pets with his tail wagging. That took a ton of work, but he got there.
Somehow, he's not even anxious about storms or fireworks anymore as long as he's in our house. Anywhere else, they're a problem, but that's pretty normal for a dog. He's happy enough as long as I let him hide under something or get in my lap. He's a 55lb husky. I usually choose under something.
Anti anxiety meds did not work, btw. They made him worse. All he would do on them is hide under the dining table, even sometimes when he really needed to relieve himself, and then he'd cry about the mess he made, no matter how I tried to soothe him. The vet chose not to try another med. Pig skin chews turned out to be the best thing for high stress situations. He chews on them and calms right down. He's a pretty gentle chewer, so they last a long time.
Those chews are what got him accustomed to grooming, and now he tolerates bathing and drying, but loves being brushed. They are also what worked for storms and fireworks. He doesn't need them in the house anymore, but I still give him one on independence day and during bad storms. I want him to keep associating those events with something good, and he really loves those chews. He will, however, bring one to me and give it or let me walk up and take it. He sighs heavily and gives me sad looks, but he does it. We have two huskies, so I've been careful to get rid of even the smallest resource guarding, so it didn't turn into something big.
We're still working on his leash manners around reactive dogs, because he turns into one of them. Slow progress is being made. Sloooowww, but if I look back at where he was when we got him almost 3 years ago, he's come a long way. We can pass at about 20' with only soft whining now. It used to be lunging and barking at 100. At 15? Nah, he's still going to lunge and bark. I'm often envious of those whose dogs just walk calmly by other dogs freaking out, but then I remember my other dog does that just fine, too. He so pointedly "ignores" them, it's hilarious. His calm has helped a lot in training the other dog. I am calm. He is calm. There's no reason to freak out, right? It's just so hard for me to keep that calm, which isn't helping him at all. He will catch even the slightest bit of tension from me, and then he loses it if he hasn't already.