Fight or flight. Run or be eaten. We were all taught that horses evolved to have single toes because they were the prey of predators. A single hoof made them one of the fastest animals on earth. The successful survivors were the fastest ones, because they could outrun lions and tigers and bears. But a new group of researchers published an alternate point of view on April 12, which we share thanks to the University of Bristol in England. According to the authors, they weave "together information from equid evolutionary history, foot anatomy, and locomotion, which provide the essential background information that informs our novel proposition". They suggest that horses' feet evolved for efficient trotting during grazing, rather than for speed to evade predators. But isn't it possible that the single toe aided both survival gaits?
