Answer:
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
I have fangs and enjoy piecing holes with a single bite.
I am needed for most animals and hardcover books
I grow up while growing down
I am a type of cheese made backwards
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?