What is this list based on? I find a lot of these hard to believe. Pigs are smarter than dolphins? Sheep are smarter than orangutans? Rats are smarter than raccoons? Ants and spiders are on the list at all?
Ok where is gorilla? Gorillas are able to learn sign language and you dont have them there? They are in the top 3... Seriously... Then raven, ravens are smarter than crows. Even smarter than some humans...