You grow a thick tail. The tail may be fur-covered, slender and whip-like like a rat's, or scaly like a lizard’s. Although the tail improves your balance and can serve as a weapon, it cannot be used for gripping objects.
Benefit
The tail provides a +2 mutation bonus on all Acrobatics checks made while balancing. In addition, you gain a single natural tail slam attack that deals 1d6 bludgeoning damage (assuming you are Medium size).
Special
A creature that already has a tail or the Prehensile Tail mutation adds the effects of this mutation to their existing tail. It does not give more than one tail.
This mutation can be used in conjunction with the Stinger mutation.