Argentinian scientists have introduced the world’s first gene-edited horses using the CRISPR-Cas9 technique, creating 10-month-old foals with enhanced muscle size and speed. These genetically modified horses are expected to outperform traditional horses in speed and power once fully grown, potentially giving riders an edge in Polo competitions. The breakthrough has sparked controversy among breeders and players, with critics arguing that gene editing undermines the traditional art and spirit of horse breeding.

While Kheiron Biotech, the company behind the innovation, claims the technology could revolutionize horse breeding, the Argentina Polo Association has banned gene-edited horses, stating that the technique diminishes the charm and magic of breeding. Enforcement of this ban remains challenging, as there are currently no mandatory tests to differentiate gene-edited horses from cloned or conventionally bred ones.