Answer:
I can be swallowed But I can also swallow you.
Weight in my belly trees on my back nails in my ribs feet I do lack.
My tail is long my coat is brown I like the country I like the town. I can live in a house or live in a shed And I come out to play when you are in bed.
Although it sounds like I work on a transportation device I actually work in a restaurant.
I turn everything around but I cannot move. When you see me you see you!
What scientists might call your pooch.