I drive by several fields of horses on my way to/from work, and i’ve always wondered… how to they they get that muscular with no protein? Sure owned horses might get a special feed that isn’t just grass, but wild horses don’t have access to that. As far as I’m aware, they just eat grass. Maybe the occasional fruit if they stumble upon one. Seems like an extremely low-nutrient, low-calorie, low-protein food for such a massive, muscular animal.
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Grass has protein (all plants have some), it’s much lower by percentage than meat, but horses eat an enormous amount of grass each day (up to 20 lbs every day).
They also have a digestive system that’s able to break down what would be fiber to humans and get more useful nutrients from the fiber.
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