That marmosets can learn from other marmosets isn't all that surprising. Slightly more impressive is that they can learn from unfamiliar marmosets, who they haven't met before. But what's really amazing is they can learn from instructional videos.
You may think that the only thing separating some of your friends from monkeys is their ability to at least read. Time for a rethink: new research shows that baboons are capable of learning how to tell the difference between real and fictional English words.