human ear

human ear

The Compassionate Capybara Donguri 思いやりカピバラどんぐり

1mo ago
SOURCE  

Description

I was sitting beside Donguri petting her when she suddenly became very alert. I had heard nothing but Donguri must have heard a distress call from Yuzu. She got up and started walking towards Yuzu's enclosure calling. I sensed from Donguri's behaviour that something was wrong with Yuzu. As soon as I saw Yuzu it was obvious she was in great pain. She was rolling incessantly with a sad and very worried look on her face. She must have been calling out in distress in a frequency range inaudible to the human ear. Capybara's vocalisations can be outside the range that is audible to the human ear, both ultrasonic (describes sound waves that have frequencies above the upper limit of the normal range of human hearing) and infrasonic (frequencies below the limit of the normal range humans can hear, although if you are next to a capybara you can feel the vibration). Thanks to Donguri I was alerted to poor Yuzu's suffering. As I watched her rolling in agony I noticed a small twig about two inches long protruding from her bottom. 22nd September 2014 024