When she had first inserted you, you had to drag along the hard, smooth exoskeleton, making you worry about it, but you learned that, even without the wet and warmth of her saliva, the inside of the hole was warm all its own, with softer flesh that was lacking fur, reminding you more of the palm of a hand in general. She even seemed capable of tightening it, adding to her grip as she slid her foreleg up and down your dick.