3. Our Love Of Kissing Comes From … Rats?
Kazushige Touhara and colleagues at the University of Tokyo believe that our affinity for kisses descends from an ancient rat. Mice and men have a surprisingly similar genetic makeup — sharing a common ancestor that lived sometime between 75 and 125 million years ago. This ancient rat-like creature went by the name of Eomaia scansoria (Eomaia, Greek for “ancient mother” and scansoria, Latin for “climber”). The science team theorizes that this creature would rub noses with a mate to sample his or her pheromones, and signal desire. So basically, human kissing is really rodent behavior. Who knew?
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