Answer:
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
Plant whose name sounds like a dish full of dairy spread.
I fly through the air on small feathered wings, seeking out life and destroying all things.
What can you catch but not throw?
What building has the most stories?
People take me on walks and I run and have fun. What am I?