Why is the horse a useful species to study the evolution of?

The horse is a valuable species for studying evolution due to its well-documented fossil record, which illustrates a clear lineage of anatomical and ecological changes over millions of years. These changes include adaptations to different environments, such as increased size and changes in hoof structure, which provide insights into how species evolve in response to environmental pressures. Additionally, horses have played significant roles in human history, allowing researchers to explore co-evolutionary dynamics between humans and domesticated species. This combination of biological and historical perspectives makes horses particularly intriguing for evolutionary studies.