Answer:
A pony trots his way through the world on these.
Black and scary, small and hairy. In the night you hear it preach, Through its noisy high pitched screech.
I'm a large animal with a hump on my back. I'm used for transport in the desert. What am I?
I grunt and have a curly tail. People say I'm dirty but I'm actually very clean. What am I?
They're actually great swimmers now, but later they will become excellent hoppers.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.