Since childhood, people seem to be worried about a seemingly trifling problem - why do cats purr? And to be more precise, how exactly do they do it. Zoologists can tell about this. Pet pets have special thin bones near the vocal cords, located between the base of the skull and the place where the tongue grows. When an animal feels pleasure, its brain generates impulses that cause the muscles to contract around the hyoid bones. The muscles then tighten, then relax, which is why a vibration occurs in the vocal cords, which resonates in the bones with an echo. Therefore, we hear such a quiet "rumble".
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But if scientists have found the answer to the question “why cats growl,” then the question “why do they stop doing this when they hear the sound of pouring water,” remains a mystery. But the fact remains: the veterinarians have long noticed this feature, when they need to listen to the lungs and the heart of the animal with a stethoscope, they simply open a faucet in the washbasin in the office. Mur-mur immediately ceases.