But until lately, the route to domestication by people has been a black box. The evolutionary path leading up to Equus is a classic model of evolution - a thoroughly documented history that graces textbooks and museum exhibits. Despite their differences, these animals are all Equus caballus, joined in the modern equid family by donkeys, zebras and the wild Przewalski’s horses (pronounced shuh-VAL-skees) of Central Asia (though some taxonomists prefer the name Equus ferus for wild horses, and classification of Przewalski’s horses can vary). Today, horse breeds number in the hundreds, from the high-stepping Lipizzan horses of Austria to the Clydesdale draft horses of Budweiser commercials to the thoroughbreds of the Kentucky Derby. Living World From tiger scat to DNA to - hopefully - survival
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