Why can't I play with Misty?

Both the younger cats are fascinated with Misty and she is quite happy to run up and down the cage to annoy them.

Tugger found to his cost, she has sharp teeth when he decided he would stand on the top of the cage.

Appropriately named, Rumple Teaser, has yet to learn this lesson. You can see she knows she shouldn't go near Misty, but there is always the battle between what she knows is right and what instinct is telling her she should do.