Although there isn’t a complete agreement on the percentage of left-handed (left-pawed) cats, one source states, ‘when it comes to using their paws to catch or manoeuvre something, cat are usually left-pawed or ambidextrous; only 20 per cent are right-pawed’ (The Cat Expert).
Another source (Dr Deborah Wells and Sarah Millsopp of Queen’s University Belfast) states that of 42 cats tested in a study, all 21 females used their right paw while 20 out of 21 males used their left paw and one male was ambidextrous.
And yet a third source states that, ‘more cats are left handed than right handed. Out of every 100 cats approximately 40 are left-pawed, 20 are right-pawed and 40 are ambidextrous’ (cat-world.com.au).
We can conclude that the percentage of left-pawed cats is higher than the percentage of left-handed people, which is around 15%. We are not sure of the exact percentage but it said that 70-95% of people are right-handed.
Research has been done on humans to decide why there is a large predominance of left-handedness. Scientists are still not completely sure why this is but we are sure that it has existed for around 500,000 years.
One theory is that the left side of the brain manages language and the right hand is controlled by the left side of the brain. This ‘might suggest that as the left hemisphere evolved for language, the preference for the right hand may have intensified simply as a side effect’. (bbc.com – Jason Goldman).
Another theory suggests that a competitive society fosters an increase in left-handedness as it provides an advantage because it creates a difference e.g. in sports while in a cooperative society the left-handed are at a disadvantage as tools and implements are designed for right-handed people. As society is increasingly cooperative (or meant to be!) there are less left-handed people. Also some left-handed people had their left-handedness knocked out them.
Can we use these theories to try and explain why cats are more likely to be left-pawed?
You’d have thought that the default situation (the automatic status) would be ambidextrous. As cats have a less extensive language than humans the link between language and right-handedness does not apply. This may be a factor. Also, the cat is essentially solitary and competitive. Based on the above theories, this favours left-handedness.
However, I am going to suggest the following reasons:
- Domestic cats are not necessarily normally left-pawed. The research is incomplete. More work needs to be done. There is probably an even distribution between left and right-pawed cats with all cats being to a lesser or greater extent ambidextrous.
- Cats may favour one paw over the other because they learned that using one paw more than the other made that paw more dextrous due to extended usage. But for a cat there is less of a requirement for one paw to be more dextrous than the other because in their day-to-day activities both paws are used equally. For humans there is a need to have enhanced dexterity. In fact, this simple reason, which I provide, may also be why there is a preference for one side in humans, which has been modified by competition and cooperation as mentioned.
I have not provided a clean answer because there is none as yet. For me the key is that cats are essentially ambidextrous because it suits their lifestyle. Humans need fine dexterity to operate tools etc.. The Japanese Beckoning Cat is left-pawed (picture heading page).