Arnold is Pig's younger cousin and one of Kipper's best friends. He is voiced by Chris Lang. Due to his age, Arnold is very quiet. He is usually seen sucking on this thumb. He can only say two words: “Duck” (seven times) and “Igloo” (once in an episode). Pig tends to take care of him, assuming Arnold can’t do much because of his age, but Arnold proves to be able to do a lot of things. Due to his age, Arnold is a toddler who’s very quiet, usually seen sucking on this thumb. He can only say…