Cat Toy - Hiding Balls

This model allows cats to play more enjoyably by placing two balls on a single rail.

There is a small tunnel in the middle of the rail, and it has a slight step so that a ball that slowly enters the tunnel stops inside. 

It is tricky for a cat to retrieve the ball directly with its paws; it must push another ball to dislodge the ball inside the tunnel in order to get out. Cats have a tendency to cling to objects that fit into confined spaces. This toy is designed to utilize this instinct in play.