How to Muzzle an Injured Dog
Whenever you approach an injured dog, always start by protecting yourself from being bitten, which means muzzling the dog first thing. If a dog is in severe pain and is afraid, even your canine best friend may bite the hand that feeds her.
Make a temporary muzzle out of a length of bandage, a belt, a shoelace, or some pantyhose. If it turns out the muzzle was not necessary because your dog responded to your examination and treatment well, your dog will forgive you for having used one. If it was necessary, you’ll be glad you had the foresight to protect yourself.
Approach the dog slowly, using a soothing tone of voice.
If you are calm and composed, the dog may react with less anxiety.
Bring the bandage (or other muzzle material) up under the dog’s chin about halfway between the leather of the nose and her eyes.
Tie the two ends in one loop on top of the dog’s nose.
Bring the bandage back under the dog’s chin and tie another single knot under the chin.
Make sure you're not pinching the dog's tongue in the clasped mouth.
Bring the two ends of the bandage to the back of the dog’s neck behind her ears and tie them in a bow.
Tie the loops of the bow into another single knot to keep the muzzle securely fastened.
The muzzle should be fairly tight, enough that the dog cannot open her mouth, but not so tight that it impedes breathing.