Pasture is a building found in Endzone.
Description[]
"Livestock can be kept on a Pasture in order to slaughter them for Food or obtain other Resources via passive product yield. Different type of animals can be captured by Hunters or acquired via Barter Trade Deal or Expeditions. All animals provide different types of Meat. Some species also produce additional Resources like milk or eggs. Furthermore, every species yields different amounts of Meat and has its own reproduction rate."
Source: developers update notes.
When a new Pasture is build and livestock already being breed is chosen, the Herder will move half of the animals to the new Pasture.
Livestock types[]
Animal types available on a map are random, additional animals can however be acquired through exchanges at the Trading Post and select Side Tasks (animal rewards are fixed/set in this case).
The ingame and above description regarding expeditions seems to be outdated and incorrect as animals are not acquired on expeditions, although meat is.