For those who have practiced Yoga, you may be familiar with the downward dog position. It's one of my favorites. It is often referenced as a dirty joke in movies whenever Yoga is present.
This Yoga move is based on a stretch that dogs do. Niko is a pro at downward dog position. When he wakes up in the morning and whenever he feels the urge, he stretches his front paws out in front of him, sticks his butt in the air and it gives his spine a good stretch. He also goes into this position when he plays or chews a bone. It is similar to the play stance, where his behind is lowered and his tail wags as he looks on to another dog or whoever he wants to play with.