According to the survey, left-handers account for 10% to 20% of the total population. Scientific research shows that this is caused by the difference in the development of the left and right brains of individuals. If a person’s left brain is dominant, he is right-handed, and similarly, if his right brain is dominant, he is left-handed. So there was a fun question. Someone asked that since humans have left-handers, what about animals? Will there be left-handedness among animals? The answer lies in science.
Are there any left-handed people in the animal kingdom? Really, and many more. There are almost countless left-handers in the animal kingdom. Many people who like to keep pets will find that most male cats are left-handed. Most of them extend their left paw first when grabbing food or objects, while female cats do the opposite. Parrots are very clever birds. Scientists have discovered after research that many parrots are left-handed, and they basically extend their left paw first when they grab food. In summer, crayfish is a favorite of many people. When you look closely at the two large tongs of the crayfish, you will find that the size of the left and right tongs will be different, and some are particularly obvious. Because lobsters will stretch out the most powerful tongs when preying, for a long time, they will often use the powerful one for the accuracy of predation, so there are left and right handedness.
What is even more unexpected is that not only the animal kingdom has a lot of left-handers, but even the plant kingdom also has left-handed phenomena. Does it feel bigger? Plants have no hands and can’t work. How to distinguish between left-handed and right-handed? Scientists distinguish plants from their leaves, flowers, fruits and roots. The leaves of many plants are opposite, and there is no difference when viewed from the outside, but after careful observation, you will find that the left and right leaves are not exactly the same. The big leaf on the right is right-handed, and the big leaf on the left is left-handed. Just like humans, right-handed people will have a stronger right hand, and left-handed people will have a stronger left hand. The same goes for plants.
The left- and right-handedness of plants is very regular. For example, the left-handed leaves of common bean are 2.3 times that of right-handed leaves, and the left-handed leaves of mallow are 4.6 times larger than right-handed leaves. Of course, there are also right-handed ones, such as wheat and barley. There are no wonders in the world. Whether human left-handers are smarter than right-handers, and what is the significance of left-handedness in animals and plants, I think these mysteries will be solved in the near future.
