Equids originally evolved in North America.

马动物最初是在北美演化出来的。

Horses and ponies are actually members of the same species, equus calibus.

马马其实是同一物种的成员，也就是马动物。

Various ideas have been tossed around in the last 150 years about the African equids' stripes.

在过去的150年里，关于非洲马动物身上的条纹有各种各样的观点。

Equines are the subfamily of equids that includes modern horses.

马动物是包括现代马在内的马动物亚。

So whether you're riding high up on a horse or practicing prancing with a pony, they're all equines in the end.

所以不管你是骑着高高的马，还是马一起练习跳跃，它们其实都是马动物。

So, as they became increasingly adapted to their grassy new environment, equines thrived throughout the Miocene.

因此， 随着它们越来越适应新的草地环境，马动物在整个中新世蓬勃发展。

And one of the most important likely descendants of Miohippus was an equid that was even better adapted to life on the plains: Parahippus.

Miohippus 最重要的可能后代之一是一种更适应平原生活的马动物：Parahippus。

Bovids, equids and, in particular, canids, were put to work by H.sapiens; felids always took a slightly different view of the matter, but were indulged for their rodent-catching talents.

牛动物、马动物，尤其是犬动物，都是由智人分工的；猫动物略有不同，但受宠的原因主要是捕捉啮齿类生物的天性。

Then, as the Pliocene Epoch opened about 4 million years ago, one of the single-toed groups of equines finally gave rise to Equus, the genus of the modern horse.

然后，随着大约 400 万年前的上新世时代开始，单趾马动物群中的一个终于进化出了现代马属马属。

For instance, the eight species of wild equids (horses and their relatives) vary greatly in disposition, even though all eight are genetically so close to each other that they will interbreed and produce healthy (though usually sterile) offspring.

例如，八种野生马动物（马及其近亲）的性情差异很大，尽管所有八种野生马动物在基因上非常接近，以至于它们会杂交并产生健康（尽管通常不育）的后代。