Answer:
I have a pouch on my belly where I carry my babies. I hop around Australia. What am I?
I quack and have webbed feet. What am I?
When they are caught, they are thrown away. When they escape, you itch all day.
It can be white or blue or black, Humped or have a horn. And when it talks it sings its menuets, as it's travelling the depths.
What peels like an onion but still remains whole?
What goes up the hill and down the hill, And spite of all, yet stand still?