There's roughly twenty-two of them

Okay this one hurt.

When we got our younger cat Skadi, her favorite toy was (still is, but she's calmed down with age) the rattley mouse. She would bring the mouse to be thrown for fetch so many times that not even two human adults in the house could keep up with her. So my partner started making puzzle boxes to put the rattley mouse in that would occupy her for longer.

So, we have a setup: mouse is in the puzzle box, puzzle box is on the floor, younger cat is trying to resolve the puzzle box, elder cat is sitting on the cat tree observing all this. Skadi spends about fifteen minutes trying and failing to get the mouse out of the box. She sticks her paw into the holes. She sticks her nose into the holes. She pushes the box to and fro on the carpet. She meows beseechingly for a human to come solve the problem. Sticks her paws into the holes again.

Finally, she gives up on the puzzle box and wanders over to see if there's any food to be had. As soon as she walks away the elder cat gets up from the cat tree, big stretch, jumps down, walks over to the puzzle box, hooks a paw under the edge and flips the whole thing over, spilling the mouse onto the floor.