Ginny tucked her head in an attempt to protect her neck. Teeth bit into the robes, bruising the flesh beneath, but had trouble gnawing through the spell-enhanced cloth. It reared back and tried again, this time its teeth found purchase into the neck, and blood flowed as teeth pierced the skin, chomping at random. Harry carefully aimed and used a blasting hex to remove an arm and kept devouring the ginger, so he hexed the skull, reeling at the sight of bone and brain spattered across the floor. It didn't seem to care.