The Horse Proof

The horses! That was the yichus that was able to trace the rise of a small organism to what it is today. They had there little animals the size of rats. That was the original great-great grandfather of the horse; the eohippus. And then there was the Orohippus and then Epihippus and Mesohippus; every one finally became bigger and bigger and lost its claws and developed hooves.