有蹄类动物

例句：

1. 1. Many mammals are classified as quadrupeds or have four-legged animals.
   许多哺乳动物被归类为四足动物或具有四条腿的动物。
2. 2. The elephant is a member of the family Elephantidae and has a trunk with five toes.
   大象是象科家族的成员，拥有一个带有五个脚趾的鼻子。
3. 3. In the wild, many species of mammals are adapted to running on four legs.
   在野外，许多哺乳动物物种适应了用四条腿奔跑。