Rats giggle when tickled.
Science recognizes two types of tickling: knismesis and gargalesis. The former is the “light, feather-like” kind, which doesn’t induce laughter, while the latter is more high-pressure and does cause laughter. And while you may think of humans as the only creatures susceptible to gargalesis, one of our much smaller counterparts is as well: the humble rat. Rats actually love being tickled, especially on their back and belly, and there’s even a specific term for the frolicking they do in between tickles: freudensprünge, or “joy jumps.” Sadly, rat giggles are too high for us to hear without special microphones that can reproduce the sound in a lower register. (That doesn’t make videos of rats being tickled any less adorable, however.)
where can you buy disulfiram All of the great apes (gorillas, chimpanzees, bonobos, and orangutans) let out a “remarkably human-like laugh” when tickled, while animals ranging from dogs to penguins appear to enjoy it as well. That said, many humans do not — some find the sensation deeply uncomfortable, and laugh out of discomfort rather than joy. One study in which participants rated how much they like being tickled on a 10-point scale (from very unpleasant to very pleasant) produced an average of only 5. Perhaps surprisingly, people rated tickling others at only 5.9.
In other words, it ain’t funny.


