Answer:
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.
My first is in window but not in pane. My second's in road but not in lane. My third is in oval but not in round. My fourth is in hearing but not in sound. My whole is known as a sign of peace. And from Noah's ark won quick release.
What can provide food before it is alive, while it is alive and after it's dead?
A huge mythical animal said to resemble a whale.
Looks like a hippo crossed with a unicorn.
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?