Squash and Stretch — The First Principle

SQUASH AND STRETCH is the FIRST and arguably most important of Disney's 12 PRINCIPLES OF ANIMATION. The idea: when something hits the ground, it SQUASHES. When it stretches up to jump, it STRETCHES. This exaggeration makes objects feel weighty and alive. Without it, animation looks stiff and dead. With it, even simple shapes feel real.

The classic example: a BOUNCING BALL. As it falls, it stretches slightly toward the ground (anticipation of impact). When it HITS the ground, it squashes flat. As it rebounds, it stretches up. At the peak, it's back to a normal round shape. This subtle distortion is what makes a ball feel like it has WEIGHT and BOUNCINESS. It's why animation feels alive and not just "moving pictures."

VOLUME PRESERVATION is a key rule. When an object squashes, it also gets WIDER (mass doesn't disappear). When it stretches, it gets THINNER. Like a real water balloon — squeeze it short, it bulges wide; stretch it long, it gets skinny. Forgetting volume preservation makes animation look wrong even if the timing is right.

Squash and stretch is the heart of believable animation. Even cars, faces, and abstract shapes use it subtly. Once you see it, you'll spot it in every animated film and game.