Misc: How many varieties of Rat Snakes are found in North America?

Questions

which member of the peanuts gang once said 'there's no heavier burden than a great potential'?

what comic was korky the cat in?

what is the nationality of agatha christie's detective hercule poirot?

what is the shortest word in english that contains the letters a, b, c, d, e and f?

what was a bo peep to a 19th century cockney street vendor?