Spiked Plating (3.5e Feat)
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Spiked Plating [Racial]
Your body is covered in lethal spikes that can deal damage to any foe that dares get too close.
Benefit: You are treated as having armor spikes for your size. You deal extra piercing damage on a successful grapple attack as if you were wearing armor spikes (1d6 for medium size). The effect of this feat doesn't stack with equipment or abilities that provide similar benefits.
Normal: You do not have spiked plating.
Special: Any other natural attacks you have deal piercing damage in addition to the damage type they already deal.