|Photo Credit:The Intelligent Dog's Guide to a Troubled World|
Some sources say "none of the above". Your dog cannot understand language. If the question was "which of these can your dog learn?" Their answer would be "all of the above".
You say "sit" or the Finnish word for sit and they sit, it's not because they know what that means. It's that you have trained them that those sounds mean sit. You could make up a nonsense word and train your dog to it. ~ Yahoo AnswersIs it possible that this makes them more and not less intelligent. Is it that they don't understand language or do they just learn language in a different way than humans?
The short video below from Time Magazine gives us a glimpse at a current study being conducted using dogs belonging to faculty and students. The study demonstrates that dogs know what to do when their owners point to something, previously thought to be understood only by "higher order" animals like chimpanzees. Recent studies have concluded that dogs have the intelligence of a two-year old child. This puts them on par with the great apes.