Answer:
I am heavy forward but backward I'm not.
I am not very commonly found! Only in some rainforest! I have an odd number of toes! I'm very lazy and hang upside down!
2 in a corner 1 in a room 0 in a house but 1 in a shelter.
Whoever makes it tells it not. Whoever takes it knows it not. Whoever knows it wants it not
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain; doing no harm, and feeling no pain. What am I?
What did the piece of wood say when he saw the screwdriver and screws approaching?