Alligator swims on any path you set. Sculptied body, flexi tail. You can also adjust speed of swim.
Save your money & time
From the notecard: "If you run into a problem, just delete and rezz a new one and start over. It can take a few tries (even for me!), but once set up your Cartoonimal should fly, walk, or swim without difficulty."
I've just spent 5 hours on seven tries amd it still hasn't worked. I have other path-programmable animals on my land, so I DO know how to do this. The alligator, unfortunately, does not strictly follow its programmed path, but cuts corners. If the corner is neighboring land, and even a small part of the alligator encroaches, the alligator stops, often rolling over on its back as if dead. Very funny, but not L$400 worth, Frustrating and disappointing.