A large semiaquatic rodent(Hydrochoerus hydrochaeris) of tropical South America, having short limbs and a vestigial tail and often attaining lengths of more than .2 meters (4 feet).

• 水豚：一种巨大的半水栖啮齿动物（水豚），产于南美洲的热带地区，四肢短小，尾已退化，身体长达.；2米（4英尺）