She is not known to evolve into or from any other Pokémon.
Miltank is a mostly pink colored bipedal cow with blue eyes, small horns and a long, cream-colored tail with a black ball in the end. She has a cream colored belly with four udders. There are black spots on her back as well as a black "hood".
Unlike Tauros, Miltank are much more placid Pokémon and spend most of their time eating and digesting grass and other plants. However, they also possess a stubborn streak that may be unwilling to comply if they don't receive the proper training required. When properly trained, they can be a very useful asset, both in milking and battling.
Miltank are happiest in fresh pastures.
Miltank are herbivores. They mostly consume grass, which they convert into milk. Miltank are also known to eat Berries and Poffins, provided usually by Trainers unless they have been left lying around.
This Pokémon was unavailable prior to Generation I.