You will Watch Hey Arnold! Season 4 Episode 10 online for free episodes with HQ / high quality. Stream cartoons Hey Arnold! Episode 76 Dino Checks Out: Dino Spumoni is found missing and then declared dead after what appears to be a suicide attempt. However, Arnold finds out that this isn’t the case, and he secretly lives in the boarding house, believing that his work will sky-rocket in value after his “death”.