Answer:
I have four fingers and a thumb, but I'm not living. What am I?
Born of sorrow, grows with age, you need a lot to be a sage. What is it?
Use me if you really want to see inside someone
I am easy to waste and unstoppable
Bright as diamonds, loud as thunder, never still, a thing of wonder. What am I?
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.