Scientists said the Lystrosaurus the size and shape similar to modern pigs, pigs with their long-mouth and the same number of small Liaoya and thus digging the ground vegetation.

• 科学家称，水龙兽的外形尺寸和现代猪相似，它们长着猪一样的长嘴和一些小獠牙，从而可以挖掘地面的植被。