How did horses become domesticated?

The domestication of horses is a fascinating journey that had a significant impact on human history. Horses, known scientifically as Equus ferus caballus, were first domesticated around 5,500 years ago (1) on the steppes of Central Asia, particularly in regions that are now part of Ukraine, southwest Russia and western Kazakhstan. The exact reasons for their domestication are still debated, but it’s clear that their relationship with humans evolved from being hunted for food to becoming crucial for transportation, companionship and warfare.

The early stages of domestication

Initially, horses were likely domesticated for their meat and milk (2), as was common with other animals during this time. Archaeological evidence suggests that early humans might have started by herding horses before eventually realising their potential for riding and carrying loads. The transition from wild to domestic wasn’t instantaneous; it likely took centuries of selective breeding and training to develop the modern horse breeds we know today. Horses provided early humans with a powerful new mode of transportation, dramatically expanding the scope of trade, communication and warfare.

The role of genetics in domestication

Interestingly, genetic studies have shown that all modern horses share a common ancestry, despite the vast differences in breeds today (3). This indicates that domestication was a centralised process rather than multiple, independent events. One key to understanding this process lies in the horse’s social nature; their tendency to form hierarchies and follow a leader made them more amenable to human control. Domesticated horses were selected for traits like temperament, strength and endurance, which were crucial for their roles in human society.

Cultural impact and spread

As domesticated horses spread across continents, they became integral to various cultures, from the nomadic tribes of the Eurasian steppes to the empires of the Middle East and Europe (4). Horses revolutionised agriculture by pulling ploughs, and they became essential in battle, where cavalry units often decided the outcomes of wars. The bond between horses and humans grew stronger as people began to rely on them not just for work, but for companionship and recreation as well.

Conclusion

The domestication of horses is a testament to the profound impact that animals can have on human civilisation. From their origins on the steppes of Central Asia to their global presence today, horses have been indispensable partners in human history. Their domestication not only transformed our societies but also shaped the way we interact with and perceive the natural world. 

References

(1) Librado et al., 2016, ‘The Evolutionary Origin and Genetic Makeup of Domestic Horses’, DOI: 10.1534/genetics.116.194860 

(2) Outram et al., 2009, ‘The Earliest Horse Harnessing and Milking’ DOI: 10.1126/science.1168594

(3) Achilli et al., 2012, ‘Mitochondrial genomes from modern horses reveal the major haplogroups that underwent domestication’, DOI: 10.1073/pnas.1111637109

(4) Taylor et al., 2020, ‘Early Pastoral Economies and Herding Transitions in Eastern Eurasia’, DOI: 10.1038/s41598-020-57735-y

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