Bella's Brain Busters - Supercat?

On the way home from the school carnival (where I was dunked dozens of times) Bella was telling me dozens of riddles. This gave me an idea to post them on my student's weblog and challenge them too.

Here's the first:

My brilliant daughter Bella

Has a befuddling riddle for you.

Can you figure it out in one guess?

Or will you need two?

Supercat?

A cat jumps out a window of a 50-story building and lands on the pavement unharmed.

How is this possible?