Within a very quick google research, one reads that the jaws (mandibules I should say?) of leafcutter ants can vibrate up to 1000 times per second. Wikipedia doesn't say so though. Anyway I wanted to see a slow motion video about the vibrations but didn't find anything. If you found one, please share it. I wonder what is the mechanism that can create such fast vibrations. If you know about this, feel free to share.