1. Length - segment from the tip of your dog's nose to the eye line.
2. Circumference - snout circumference one inch below your dog's eye line, should be measured with mouth slightly open.
3. Eye Line - segment from the eye line to right behind your dog's ears.
4. Neck Circumference - neck circumference right behind the ears and right behind the jaw of your dog.
5. Width - your dog's snout width in the widest area.
6. Height - your dog's snout height, should be measured with mouth slightly open.