Horse Evolution
Can you imagine a world in which horses of all kind of colors, shapes and sizes (even a bit larger than a small dog) were present everywhere? Well, nowadays, horses are just one small part of an huge family tree that spans millions of years. Unfortunately a lot of branches of the horse family are now extinct.
About 55 million years ago, the dog-sized "Hyracotherium" (known as the first members of the horse family), were present through the forests in North America. Along their history, most horses remained small, but when the climate conditions changed, new species rapidly appeared. That is how some of them became larger and had the familiar hooves and grazing diets that we call today "horses". Only those branches survived to the present days.
