If you consider Przewalski’s horse as being closer to the original lineage than what we’ve bred them to be, I’d imagine they didn’t have as many issues, in the same way Przewalski’s horse doesn’t. They’re smaller but stockier, so they can hold themselves up on three limbs, their skin isn’t as tight so it can heal from wounds better, and their soles are thicker so they can run on rough terrain without as much risk of injury. We bred horses to work, to carry us, and to be shiny, and I think that ruined much of their resilience.
If you consider Przewalski’s horse as being closer to the original lineage than what we’ve bred them to be, I’d imagine they didn’t have as many issues, in the same way Przewalski’s horse doesn’t. They’re smaller but stockier, so they can hold themselves up on three limbs, their skin isn’t as tight so it can heal from wounds better, and their soles are thicker so they can run on rough terrain without as much risk of injury. We bred horses to work, to carry us, and to be shiny, and I think that ruined much of their resilience.