A study at the University of Exeter in January 2020 found that squirrels that strongly favored a paw (爪子)—whether right or left—performed less well at leing tasksFirstly, how did the researchers discover that squirrels favored a side (known as lateralization) in the first place? Moreover, once they knew which paw the squirrel preferred, how did they know the infor-mation was an intelligence or performance indicator? Finally, what does it all mean? Can re-searchers really draw substantive conclusions between lateralization and leing in squirrels and humans? Lets see.