Hey, I already gave you crabs! Uhm... let me rephrase that.
Seriously, the Giant Crab example I gave in your
other thread should work just fine. Vermin includes "insects, arachnids, arthropods, worms, and similar invertebrates", so that should include crabs as well:
Vermin have no Intelligence scores and are immune to all mind-influencing effects. Unless noted otherwise, vermin have darkvision with a range of 60 feet.
Hit Die: d8
Attack Bonus: Total HDx3/4 (as cleric)
Good Saving Throws: Fortitude
Skill Points: 10-12
Feats: -