They have a built in distress call, so if you attack it'll yell for help and like Every Single Ocean Creature will run to the rescue.

To the ammonites rescue, not to yours.

Ever met a cry baby?..This guy will wail if you hit it and will cover you in a type of pheromone gas....causing you to attract every dino, sea or land, to bite your butt. Prepare for war. You only need to survive 80sec.

Basically the equivalent of the chicken in Skyrim, you hit it be ready for a big fight with the town

This thing is a crybaby. Hit it, and it'll go blubbering to all its friends. Exactly who are its friends? The whole ocean.