偶蹄目（Artiodactyla）源于希腊文ἄρτιος（ártios,"偶数"）和希腊文δάκτυλος（dáktulos,"手指、脚趾"）,意为 "偶蹄",指的是这些动物的五个脚趾中,有两个（偶数）平均承受重量：第三和第四个,通常呈蹄状.其他三个趾要么存在,要么不存在,要么是残余的,要么指向后方.

Artiodactyla, from Greek ἄρτιος (ártios, “even”) and Greek δάκτυλος (dáktulos, “finger, toe”), means “even-toed”, in reference to the fact that these animals bear weight equally on two (an even number) of their five toes: the third and fourth, often in the form of a hoof. The other three toes are either present, absent, vestigial, or pointing posteriorly.

種的俗名 Common names of members

豬,西貒科,河馬,羚羊,鹿,長頸鹿,駱駝,大羊駝,羊駝,綿羊,山羊,家牛,鯨魚,海豚,鼠海豚.

Pigs, peccaries, hippopotamuses, antelopes, deer, giraffes, camels, llamas, alpacas, sheeps, goats, cattle, whales, dolphins, and porpoises.

分佈 Distribution 

所有大洋和大陆（澳大利亚和一些大洋岛屿除外）.

All oceans and continents (except Australia and some oceanic islands).

體型 Size

体型差异很大：最小的成员通常只有 45 公分长,1.5 公斤重.最大的体长可达 26 米,重达 130 公吨.

Size varies considerably: the smallest members often reach a body length of only 45 centimeters and a weight of 1.5 kilograms. The largest can grow up to 26 m in length and weigh 130 metric tons.

形態描述 Morphology