羊可以从植物中获取大量水分,并不需要专门饮水。Large mammals such as horse and rhino are obligate drinkers and obtain a larger proportion of oxygen from drinkingwater than from plants that they eat compared to goats. 参考文献见 Stable isotopes in fossil mammals , fish and shells from Kunlun Pass Basin , Tibetan Plateau : Paleo-climatic and paleo-elevation implications