In Star Wars: The Last Jedi, we saw an alien
on Ahch-To which had 4 human female like boobs. Luke even extracted milk from it.
What's the name of this alien animal?
"Thala-sirens are large, flippered marine mammals often found sunning themselves along the coastal rocks of the island. The docile creatures are not hunted, and thus do not fear the natives of the island, but they do produce a nutritious green milk that Luke has taken to harvesting".