Musicals: Contains: When you wish upon a star.?

Questions

Which breed of dog was known as The Coach Dog?

Whose symphonies include the 'London', the 'Pastoral' and the "Antarctic?

Who wrote the novels 'The Naked and the Dead', 'The Deer Park' and 'The Executioner's Song'?

What do the initials of the painter J M W Turner stand for?

What is the largest animal that has ever inhabited the planet Earth?