Answer:
What animal dwells in water and best known for its work ethic?
What kind of dog keeps the best time?
I'm a red creature from the sea with large claws, or pincers, and I'm often boiled and served as an expensive dish at seafood restaurants.
When it was young, it had a tail. When it grew up, it had knees
What jumps when it walks and sits when it stands?
What is always coming but never arrives?