|Click to view the incredible video of a fox hunting through snow|
Showing the effort characters take to move their own weight is paramount to creating believable animation of any style.
It's one thing to make the up and down motion read as 'heavy' and affected by gravity. It's quite another to master the mechanics of looping overlapping/secondary action with the character's arms, legs, and .. tail!
If ever the devil were in any details.. it's animating secondary on a looping action!