Bulletproof (Ability)

Bulletproof is a rare ability held by certain animal species.

In Battle Use
Animals with the Bulletproof ability are able to block off and nullify damage from any ball or bomb attacks. Mostly smaller special attacks are often nullified.

Speculation
Bulletproof is generally found in animals with thick hides, skins, or shells. This ability is likely to have evolved as a form of additional defense from certain oncoming special attacks.