Photos That Will Make You See The World Differently - The Curious Human

Tortoises Have The Weirdest Looking Skeletons
We are aware, for instance, that the sound of rustling in the grass means that there is a hidden creature making the noise. (Bear in mind that it's possible that when less sophisticated creatures than ourselves hear a rustling noise in the grass they may correctly associate the noise with an animal, but they won't necessarily know that the animal is there in the sense that we understand it.