UCLA Study Finds Laughter in 65 Species, from Rats to Cows
There are often discussions about what makes humans special and things like self-awareness, humour, sarcasm, tool usage, ethics etc are brought forward. I think there are hardly any fundamental differences between humans and other animals. We've merely reached an intelligence threshold that allowed us to develop better languages and writing and that means knowledge can be collected and passed on <i>much much</i> better.<p>Laughter is yet another trait some might see as typically human, yet here we are.