1. Length - section from the tip of your animal's nose to the eye line.
2. Circumference - circumference around your animal's snout one inch below its eye line, should be sized with mouth a little open.
3. Eye Line - section from your animal's eye line to right behind its ears.
4. Neck Circumference - circumference around your animal's neck right behind its ears and right behind the jaw.
5. Width - your animal's snout width in the widest part.
6. Height - your animal's snout height, should be sized with its mouth a little open.
To see more detailed instructions how to size your dog - Click here