Not only is Moomoo Milk nutritious, but it also possesses the unusual ability to heal the injuries of pokemon and people alike. Today, it is thought to have developed as a way to encourage other pokemon (and later, people) to protect them, for Miltank are not especially strong fighters. Yet their hide is too tough for most predators to bite through, and the stories of old offer a different explanation...
It is said that in ancient times, the first Miltank and Chansey were close friends. Chansey, then as now, was relied on to heal the injuries of other pokemon, but to do so it had to sacrifice its eggs – and every time it did so, it wept, for it feared it would never be able to lay eggs and have children. Miltank prayed to Arceus and any other legend it could think of, asking for a way to heal pokemon without seizing its friends eggs. Its prayers went unanswered, so instead it used its own body as an experiment, adding stomachs and trying different combinations of grasses. At times, it fell ill with food poisoning from taste-testing its own milk, but eventually it found a combination which could heal other pokemon.
And sadly, it was not enough to help its friend; instead, with an extra healer, pokemon battles merely became more common. Frustrated by this disrespect for its efforts, Miltank began charging pokemon for its milk, while Chansey, ever-compassionate, continued to heal all who asked for free. Even today, Chansey are rare because they staff pokemon centers and seldom have a chance to lay eggs of their own. The Moomoo Milk of Miltank, on the other hand, has made the farms of Olivine so rich that they might as well print money.
