Every dog (especially fearful dog) should be given time to get familiar smell of a veterinarian, staff, and veterinary environment. He needs some positive time with them before the exam time, if at all possible. Try a fun way to introduce him and give him time to adjust to the vet and the staff before you actually take him there for an official visit and exam. Just knowing in advance to provide certainty and facilitate the dog's fears ... even if they then move quickly and efficiently, "workspace" (as you might do during your work day, so it too can be familiar with the dog).
If your dog is very fearful, and requires a dog muzzle, take the time-stop. Take the day before the vet appointment, at a location other places where the dog is not so stressed out and have fun. Take the time to use a dog muzzle. It may take up to half an hour, but it's worth it to make a scary one surrendered to the muzzle. Thus, he is not afraid of it anymore and will see that it means no harm. Then, when the vet appointment time comes, go early and pre-organization of staff, will start this process is in a quiet, slow - not frenetic pace of the normal-and-out, get-it-done, at the office.
Do not muzzle your dog is? Here are two important tips on dog behavior.
1. Get a dog obedience trainer and the muzzle of experience to help before a visit to the vet, or with you. Is a professional to control the dog, when he published his frustration - by keeping the neck and the dog's neck, or loose skin around his neck of the pages of his jaw. Skittish dog frequently cries for the first time you are done, so do not panic if this happens. (This is all the more reason to settle her dog's muzzle in advance.)
2. Be sure your dog is confronted with his fear. The more you give in to their fear seems, the worse it is. Do not let the dog go when he is nervous, because it is the most dog bites occur. Fear biting. They may be of mean. So just stay under your control, until the dog calms down and you can achieve your goals.