@fryrsquared: I recognise this was unlikely to be the takeaway the researchers were aiming for from this study - and the ability of vervets to use semantic communication is indeed fascinating - but sometimes you just need a sweet story about baby monkeys to get you through the day. Monkey responses to three different alarm calls: evidence of predator classification and semantic communication by R Seyfarth, D Cheney, and Peter Marler (1980)