Caesar's favorite beast, the mighty Auroch

With the Ovis in and the equus coming, I believe one and only one more "farm" animal should be introduced. This would be the Auroch. It was an immense bull of great power and fighting ability. This could be the males bread and butter. He can be a war mount that gains damage resistance and attack boost the more he gets hurt (example: 75% health he gets a 20% boost, at 50% health he gets a 35% boost, while once his health hits 25% he gets a 50% boost). The female on the other hand, would be capable of passively producing milk, that can lower maturation time of babies, while losing the ability to attack. Perhaps only when the female is pregnant can she produce such milk is deemed op? Idk just feels like these can be a solid addition to the game, and a good compromise among what players want.