[Name] Giggle [Sound description] A series of loud, very high pitched "hee-hee-hee" sounds usually lasting less than 5 seconds. Sorry, your browser either has JavaScript disabled or does not have any supported player. You can download the clip or download a player to play the clip in your browser. Example from a captive hyena at University of California, Berkeley [Posture] Running in a fleeing posture with the mouth slightly open [Context] 
When attacked or chased, usually over a kill