Cats purr during both inhalation and exhalation with a consistent pattern and frequency between 25 and 150 Hertz. Various investigators have shown that sound frequencies in this range can improve bone density and promote healing.
猫猫有时候会发出咕噜咕噜的声音，咕噜声代表了什么意思你们知道吗?猫猫不会说话它们只能通过肢体语言或者发出一些声响来表达自己的情绪，猫发出呼噜声音是因为猫猫在呼吸的时候，喉咙的肌肉张合所发出的声音，一般的撸猫，抚摸猫咪的毛发的时候会出现这种声音，代表了猫猫很舒服，很开心。
