Other species of canids — dogs, wolves — hunt in packs, but her life is a lonely one.

其他的犬科动物——狗、狼，都群体狩猎，但鬃狼却孤军作战。

So do certain canids and crows.

某些犬科动物和乌鸦也如。

Like other truly wild canids, it displays unique behaviors.

与其他真正野生的犬科动物一样，它表现出独特的行为。

So two out of the three canid subfamilies are dead and gone.

所以犬科动物的三个亚科中有两个已经死去。

But other groups, like canids, bears, and whales, were fully fledged.

但其他群体，如犬科动物、熊和 鲸鱼，已经完全成熟。

These canids are relatively small, at about  60 cm in length and weighing just over 3kg.

这些犬科动物对较小，长约 60 厘米，重量仅超过 3 公斤。

Their scientific name, vulpes  lagopus means hare-footed fox, as this furry pad adaptation  is unique among canids.

它们的名 vulpes lagopus 意思兔足狐，因为这种毛茸茸的垫子适应性在犬科动物中独一无二的。

Not everyone's convinced that Prohesperocyon was a canid, though.

不过，并非所有人都 Prohesperocyon 犬科动物。

The only important thing that Epicyon has in common with your golden retriever or whatever is that they're both canids.

Epicyon 与您的金毛猎犬或其他任何动物的唯一重要共同点它们都犬科动物。

Today there are 34 species of canids, from the leggy maned wolf to the big-eared fennec fox.

今天有 34 种犬科动物，从长腿鬃狼到大耳耳廓狐。

One species in this genus—Epicyon haydeni—was the biggest of the big, thought to be the largest canid of all time.

该属中的一个物种——Epicyon haydeni——大型犬科动物中最大的，被认为有史以来最大的犬科动物。

So, the dingo is a unique Australian animal, a wild canid and an apex predator essential for the health of Australia's ecosystem.

因，澳洲野狗澳大利亚独有的动物、野生犬科动物和对澳大利亚生态系统健康至关重要的顶级捕食者。

Today canids include wolves, foxes, coyotes and dogs, all over the world.

今天，犬科动物包括世界各地的狼、狐狸、土狼和狗。

Because, just like cats, they had fully retractable claws, a trait that canids eventually lost.

因为，就像猫一样，它们有完全可伸缩的爪子，犬科动物最终失去了这一特征。

But in canids, they're especially big, and it's thought that these extra large spaces help dogs and wolves hear low-frequency sounds.

但在犬科动物中， 它们特别大，人们认为这些超大空间有助于狗和狼听到低频声音。

But around 30 million years ago, a new subfamily of canids appeared: Caninae, or canines, the true dogs.

但大约 3000 万年前， 出现了一个新的犬科动物亚科：Caninae，或犬科动物， 真正的狗。

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.

牛科动物、马科动物，尤其犬科动物，都由智人分工的；猫科动物略有不同，但受宠的原因主要捕捉啮齿类生物的天性。

And the biggest canids that ever lived were the borophagines, also known as the bone-crushing dogs, which I've talked about before.

有史以来最大的犬科动物 borophagines，也被称为碎骨犬，我之前已经谈过。

Canids have hollow bony structures toward the back of their skulls called auditory bullae that protect the delicate bones of the middle ear.

犬科动物的头骨后部有中空的骨结构，称为听觉大泡，可保护中耳的脆弱骨骼。

If anything, dogs resemble juvenile rather than fully adult canids, a sort of arrested development which accounts for the way they remain dependent on their human owners throughout their lives.

如果说狗与犬科动物确有似性，那么也只像未成年而非成年犬科动物。这种类似发育停滞的现象可以解释狗为何一生都如依 赖主人。