Answer:
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
I run around the city but I never move.
My voice is tender, my waist is slender and I'm often invited to play. Yet wherever I go, I must take my bow or else I have nothing to say. What am I?
My keepers feed me colored balls. With sticks they store on my den walls. Sometimes I store them in my pouch. Sometimes deep in my belly; ouch!
I twist and turn and leave a loop. What am I?
Give it food and it will live, give it water and it will die.