Right-hoofed Horses Don’t Win Races

 

Are you right-handed or left-handed? I’m a rightie, which is a pretty good thing to be for us humans. About 90 percent of humans are right-handed and we’ve built our world to favor that majority. Many things end up being more cumbersome if you are left-handed, since humans use hands quite a lot.

What about animals? Do they exhibit signs of handedness? Even ones that don’t use or even have hands? As it turns out, some animals do. Most horses have a preference for right-front, hind-left. This means that most horses prefer turning left and that is why horse races are run counter-clockwise. Marsupials are interesting. It seems that the ones that walk on all fours don’t show a preference for handedness. But, the ones that hop on their hind legs, like kangaroos, do show sidedness and most are lefties.

What is even more interesting is that some bees seem to exhibit a “handedness” preference when flying. About half of studied bees don’t seem to care either way and deal with obstacles going either to the left or to the right. But the other half seem to care quite a lot and will put up with greater hardship to stick to their preferred side.

You can read more about animals and handedness in the article “Bee Sides” in the February 2018 issue of Scientific American magazine. To find out more about handedness in humans these books from our library collection will come in handy.

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