Alligators

These cool green alligators, along with the accompanying animal mounts, can be used as a kind of tilting mechanism. They can flip up and down. You can make the mouth face left or right. It works a bit like the piranha, but it's different. The alligator tips down after the marble goes in, but it stays down. The next marble will go over its back and make it flip back up.

Sold as a box of 4.