It wants you to play with it. It will purr, attract your attention, and be lively and loud.

When you massage it, you purr, which means it is very comfortable and likes your massage very much. Because the kitten has nipples in her mouth when she drinks the mother's milk, she can't tell her mother that she is healthy in words, so the cat will purr to tell her that she is fine and everything is healthy, so that the mother can know which kitten is uncomfortable without making a sound.

When the cat is sick, it will purr when it is in a bad mood, but the owner should distinguish it from the purr when it is comfortable!

When the cat is resting, it often purrs in its throat. Some people think that this is a cat snoring, but American scientists have found that this is one of the ways cats treat themselves. People say that cats have nine lives, which has a lot to do with their snoring at rest.

Scientists point out that both domestic cats and wild cats will purr after being injured. This grunt from the larynx helps them to treat bone injuries and organ injuries, and also makes them stronger. Scientists have also found from human experiments that exposing the human body to sound waves similar to the snoring of cats is helpful to improve human bones. ?

Scientists at the Animal Exchange Research Institute in North Carolina, USA, found that the snoring frequency of domestic cats is about 27 to 44 decibels, while the snoring frequency of cougars, central and southern leopards, African bobcats, cheetahs and southwest Asian wildcats is 20 to 50 decibels. This discovery proves that the theory that human beings can strengthen bones and promote bone growth by being exposed to sound waves of 20 to 50 Hz is correct.

Ma Jin Sinal, director of the North Carolina Animal Exchange Institute, said that the legend of "a strange cat with nine lives" is not absurd, because cats can use their own sound waves to heal wounds. Scientists point out that a certain frequency of sound waves can stimulate the treatment of cat bone injuries. The purring from the cat's throat has the same healing effect as human contact with ultrasound. ?

Ma Jin Snell said that the above findings solved the mystery of the "nine-life strange cat". She said that the next step for scientists is to understand the healing process of cat snoring. All cats purr, and the tiger is one of the few cats that don't purr. Examples of cats recovering quickly after falling from tall buildings are found all over the world. A recent research report published in the Journal of the American Animal Medical Association pointed out that after investigating 132 cases of cats falling from an average of 6 stories, it was found that 90% survived. In another case, a cat fell from a 45-story building and survived.

Researchers in North Carolina are currently exploring the possibility of using sound waves to treat osteoporosis and stimulate bone regeneration in postmenopausal women. Poldi, director of the Department of Skeletal Metabolic Diseases at Hall University in northern England, said that human bones need stimulation, otherwise calcium will be lost and bones will become fragile. The purring of a cat's throat may be the cat's way of stimulating bone regeneration. Poldi also said that it is very difficult to design exercises to prevent bone loss for the elderly with osteoporosis, but it is possible to treat bone injuries and help the elderly improve their bones by using the principle of cat snoring.