Not surprised. These animals are fascinating. We're not even sure we have caught everything from their language; maybe it's not just sound-based, and the way they shake their trump and ears or they dance counts a lot as well. I've long wondered if some of them developed some religions or even if they've overcome this need, reserving it to humans only.<p>Another study already showed that some monkeys have vocal words to designate a tiger and an eagle and use that to make all the group go up or down in the tree depending where the threat comes from. Elephants being more complex animals also living in groups are quite likely to have an even more elaborated language.