Crocodilian Grip

Your jaw becomes stronger so that you can hold down prey.
You gain the following benefits:

• Increase your Constitution or Wisdom score by 1, to a maximum of 20.
• When you successfully make a Bite attack on a creature, you can attempt to grapple the same target you attacked immediately after the attack.
• One per turn as an action, while you are grappling a target after a bite attack and are now grappling the target with your teeth, you can deal 1d6 piercing damage to that grappled target, this effect ends when you are no longer grappling them with your teeth.
• Your unarmored defense increases by 1.

Adapted from Crocodilian Constitution by Critical_Volpe