In 'SpongeBob SquarePants', what kind of animal is Mr. Krabs?

In 'The Simpsons', what is the name of the family cat? What cartoon-within-a-cartoon do Bart and Lisa watch on 'The Simpsons'? In 'SpongeBob SquarePants', where does SpongeBob work? In 'SpongeBob SquarePants', what kind of animal is Patrick? In 'SpongeBob SquarePants', what is the name of SpongeBob's pet snail? In 'SpongeBob SquarePants', in which underwater city does SpongeBob live? In 'Scooby-Doo', what is the name of the gang's van? In 'Scooby-Doo', what is Shaggy's real first name?