Answer:
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not
In the forest, this blends in just right, but every December it is covered with lights. What is it?
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
Those with eyes bigger than their stomach will definitely leave the restaurant with one of them. It is named after a house pet as well.