UCLA did the research: at least 65 different animal species apart from humans exhibit vocal play sounds that are similar to laughter. So what kind of jokes should we be telling them? Plus: how an acclaimed 1972 movie might have been lost forever, if the man hunting for the original copy had shown up a week later.
Animals laugh too, UCLA analysis suggests (UCLA)
The Recovery and Re-Release of a Classic (National Film and Sound Archive of Australia)
