Familiarity is a key part of humor and laughter, and research shows people find jokes told by famous comedians to be funnier than the same joke told by someone they’re not familiar with.
Rats laugh when they’re tickled, and the more they play together, the more they laugh. Psychologist Jack Panksepp first observed laughing rats in the 1990s; he needed special equipment to hear it, as rats’ laughs are very high pitched.
this is a very good blog about the connection between laughter and enlightenment.
This cute cartoon I made explains the connection in a funny and simple way !!