A Type D personality is distressed, Type D's have a negative outlook towards life and are pessimistic. A small event that is not even noticed by type B can ruin type D's day. Type D personalities are more subject to depression than other personality types.
For most of human history, horses were seen as prey to be hunted for sustenance. During the late Pleistocene, around 55,000 years ago, Neanderthals scavenged off of horse carcasses and made occasional kills of their own.
Where does a horse live? Later finds gave a more comprehensive impression of how the animal must have looked, and the species was renamed Eohippus, meaning dawn horse.. The domestication of horses is thought to have happened in Babylon, Assyria, Egypt and parts of Eurasia between 6,500 and 7,000 years ago.