english: It's been well-described and well-observed in primates, but you also see it in rats, and wherever you find it -- humans, primates, rats -- you find it associated with things like tickling.
non_english: Bol spozorovaný a dobre zaznamenaný u primátov, ale vidno ho tiež u potkanov, a kdekoľvek ho nájdete, u ľudí, primátov, potkanov, zistíte, že sa spája s vecami ako šteklenie.