Answer:
Known for their natural tuxedos and marching.
What is common to eat before it's born and after it's dead?
Long slim and slender. Dark as homemade thunder. Keen eyes and peaked nose. Scares the Devil wherever it goes.
What scientists might call your pooch.
From that which comes within itself, It builds its table on my shelf.
You use it between your head and your toes, the more it works the thinner it grows.