Q I have a 12-year-old Blue point Siamese neutered male. After lots of experience and observation, I do believe that he is left-handed. Do cats — like people — usually have a dominant hand (paw)?
Both his breeder and first owner are left-handed people. Did he learn by observing? Stephen Claeys
A Dear Stephen: Most cats, like people, exhibit handedness: showing preference for using one paw over the other.
A study determined that the reaction time and accuracy of left- or right-pawed cats was greater than in non-lateralized cats.
In one scientific study on the topic, results showed that approximately 50 percent of cats are right pawed, 40 percent are left pawed and 10 percent are ambidextrous.
Breaking the results down by sex, the researchers found that females more strongly preferred the right than males, same as in humans. In other words, males — like your cat — more often exhibit prominent left paw use. One of the other studies showed that the reaction time and accuracy of left- or right-pawed cats was greater than in non-lateralized cats, so there seems to be a biological advantage to being either left or right “handed.”
Handedness is clear evidence that cerebral (brain) lateralization occurs in cats as it does in humans. Handedness is an inherited trait in humans, but has been shown to be a learned trait in monkeys. Cats seem to be with the monkeys in that learning seems to play an important role in handedness (and furniture scratching, too!).
Nicholas Dodman, BVMS
Cummings School of Veterinary Medicine
At Tufts University