Most of the ancestors of present-day horses had three toes that touched the ground.
hoof prints apparently lacked a frog on the hoof, which added weight to the idea that the side toes of older horses now contribute to the stretchy frog of modern horses. Not all hoof prints from modern horses with frogs show its presence, meanwhile the frog can be seen in many hoof prints known to have been made by three-toed horses.
“While the notion that modern horses have retained all of their original toes as within-hoof remnants is a novel one, and so rather appealing, it can be shown to be incorrect,” said Janis.that the frog of the horse’s hoof evolved independently of the side toes. This unique structure provides the animal with both traction and shock absorption during movement.
Additionally, the feet of one-toed horses have a different shape from the main toe than those of three-toed horses: this powerful toe is round instead of oval-shaped. This difference in shape is possibly related to differences in ecological habitat, or possibly weight distribution.Laura is a science news writer, covering a wide variety of subjects, but she is particularly fascinated by all things aquatic, paleontology, nanotechnology, and exploring how science influences daily life.
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