Answer:
A stellar five-Βlimbed sea creature.
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.
Dark, feathery, and popular in Baltimore and fantasy books.
What jumps when it walks & sits when it stand?
I'm a wild cat with spots that can run very fast. What am I?
Give it food and it will live, give it water and it will die.