Answer:
I'm carried by mad animals. What am I?
Looks like a hippo crossed with a unicorn.
To you, rude would I never be, Though I flag my tongue for all to see.
What do pandas have that no other animal has?
While I did live, I food did give, which many one did daily eat. Now being dead, you see they tread me under feet about the street.
What is lighter than what it is made of?