Lake Rodney I know I used to love him

Rolls:
1d8 for location - rolled 7 = Back limbs (roll 3 for upper limb/thigh, roll 1 for left) 
1d10 for damage - rolled 5 = 5 dmg

Conclusion: 5 dmg (moderate hit), aimed at left back thigh

She lunged forward, but went too far, veering off to the side. Taking the opportunity he saw as she over-reached, he aimed for her back left leg, his teeth clamping into her thigh. He was careful not to bite too hard — this was a spar, after all, so his teeth need not fully slice into her, but her gripped her tightly all the same.