Quite possibly the only completely harmless creature in the swamp.
#SaveTheDiplocauluses

It sorta looks like a Japan giant salamander.

If having trouble finding one in the swamps try bringing a parasaur with you and use its detection ability to see all nearby carnivores hiding in the water and walk up to them to check if they are a diplo. as long as you have some sarcos or barrys to clear out the piranhas you will find one in a couple of minutes easy.

Usually is being chased By a dinosaur from the swamps