Answer:
I am a busy worker who is a water mammal.
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
I make you weak at the worst of all times. I keep you safe I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak but seldom the bold.
What building has the most stories?
The more you have me the less you see. Shine a light on me and I shall flee.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.