Head dog Practice wearing a mouth guard or a Muzzle.

Dog: head training mannequin 

How to do it Practice wearing a mouth guard or a Muzzle.
1.Take a dog muzzle, size 3-5, and wear it around the mouth over the lower jaw and nose from behind.

2. Then insert the strap under the chin and behind the ears and attach the lock cable tightly.

3. Check the tension of the strap and breathing to prevent loosening or over-tightening.