Answer:
Forward Iām heavy, but backwards Iām not.
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
A building where people and stories are on stage
The root tops the trunk on this backward thing, that grows in the winter and dies in the spring.
My days are numbered. What am I?