Answer:
I am always running but I never get tired or hot. What am I?
Crooked as a rainbow and slick as a plate, ten thousand horses can't pull me straight. What am I?
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!
You seek me out when your hunger's ripe. I sit on four legs and smoke a pipe.
I am a protector. I sit on a bridge. One person can see right through me while others wonder what I hide.
No matter how little or how much you use me, you change me every month.