1 Symptoms of kidney pain may include. 2  fever, 3  painful urination, 4  flank pain, 5  nausea and/or vomiting. 6  Kidney pain can be on the left, right, or both sides.
A Brief History of Horses. By 55 million years ago, the first members of the horse family, the dog-sized Hyracotherium, were scampering through the forests that covered North America. For more than half their history, most horses remained small, forest browsers.
Like zebras, horses belong to the Equidae family and are part of the Equus genus. Horses are then divided into various species and subspecies. There are many similarities between the two animals. Their anatomy is very similar, both being hoofed mammals with an odd number of toes.