O One of the most practical parts of the cat's ownership is never (or at least rarely) pulling your cat…
O One of the most practical parts of the cat’s ownership is never (or at least rarely) pulling your cat in the sink to scrub it clean against its will. As recent research by Georgia Tech researchers suggests, it is because they have a unique tool for keeping clean. With a tongue like a cat, people are superfluous.
In a paper recently published in Proceedings of the National Academy of Sciences David Hu, Ph.D., a deputy professor at Georgia Tech specializing in biolocomotion, dig deep into the cat grooming process . Using videos captured by high-speed cameras (in the amazing video above, about 500 frames per second), he showed that the cats have a four-phase grooming regime supported by small keratin sticks on their tongues called filiform papillas. Development, it seems, really shortened dogs on the tongue, make them stupid to rely on us to scrub their dirt with our substandard tools.
Cleaner than you.
We have known that these papules exist for a number of years. But this analysis shows that these structures are actually unformed, hollow and slightly tilted back to the neck. This design allows them to replenish saliva. If you added all that saliva together, the volume would be about a tenth of a drop drop, according to this paper’s estimate. When a cat picks up, saliva is put on its body.
The four-step process of cat self-esteem as this paper identified by analyzing high-speed video
The four-step processes most cats use to use these structures to great advantage. The tongue first stretches outwardly from the mouth and then expands laterally which causes the papules to be destroyed until they are perpendicular to the tongue. Finally, the cat complements a sweeping lick over the coat and deposits the water stored in the hollow cavities of the papillae before retrieving the tongue, where the cavities are filled with saliva.
The researchers, who actually 3D-printed a brush based on the structure of these papillas, were apparently impressed by the elegance of nature’s design on the display here. But it also impressed other researchers who were not involved in the work, such as Sunghwan “Sunny” Jung, bio engineer at Cornell University. He told National Geographic that these papers address one of the most difficult issues in bioengineering: Liquid Transport:
“Transport of liquids is a problem for animals and engineers,” he said. “This document shows that researchers can use the basic animal behavior physics to answer basic questions.”
The dog’s tongue: can not be purified, but can at least cut water.
Generally, animals transport liquid fluid from place to place by utilizing the surface tension of the water. A 19459020 study published in the same magazine 2015 (also with the help of a high speed camera) showed that dogs make the tongue by quickly loading water and creating a column that they can then bump into their mouths. This study showed that cats actually use a similar process to drink water, but now we know that their tongues have added bonus to be able to transport fluently in another way.
In comparison, a dog’s single-use tongue is flat and unable to do this – cat lover can say worse. However, the paper admits that the dog’s tongues are still good when water is poured from a bowl, which is more than one can say for human language.