Captive-bred cats often ended up in the illegal wildlife trade.

圈养的科动物的最终解决，一般都是非法野动物交易。

But the Russian cats have thick fur to shield them from the cold.

而俄罗斯的科动物则有厚实的皮毛，帮助它们抵挡严寒。

An anxious cat may vocalize more, and a feline who's losing his hearing may also meow louder.

焦虑的可能会发出更多声音，听力减退的科动物的叫声可能更大。

What is the largest cat that lives in north America?

活在北美的最大的科动物是什么？

Adult male lions are the only cats to have manes!

成是唯一长有鬃毛的科动物！

A radio collar has given researchers an insight into the life of the most elusive of Africa's big cats.

无线电项圈让研究人员能了解到非洲最神秘的科动物的活。

They might be big, ferocious pussycat predators.

它们可能是大型凶猛的科动物捕食者。

In addition, lions are the only cats to live in groups.

子也是科中仅有的一种群居动物。

The snow leopard is the world's highest-living big cat.

雪豹是存在世界上海拔最高处的科动物。

But it wasn't the only big cat around 13,000 years ago.

但是在13000以前，大型科动物的种类更多。

The iconic felines traditionally wear wreaths at christmas time.

传统上，典型的科动物在圣诞节戴花环。

Whilst the cat with the pointed ears is prowling around down here.

而这种尖耳朵的科动物却是在树下面溜达。

They are in fact the largest cats that ever lived.

它们是迄今为止最大的科动物。

Next she examined the tongues of other cats in the species, like lions.

接着她又检查了其他科动物的舌头，如子。

The American lion is arguably the largest and most powerful feline that ever lived.

美洲拟有可能是有史以来最大最有力的科动物。

The world's highest and, just maybe, most lonesome cat.

世界上存海拔最高，也许是最孤独的科动物。

So how did ferocious felines become purr-fect pets for millions of us around the world?

所以凶残的科动物是如何变成世界各地的完美呼噜宠物?

There was no federal law regulating big-cat ownership.

当时没有联邦法律对大型科动物的所有权进行监管。

The jaguars in the Pantanal are the biggest cats anywhere in the Americas.

潘塔纳尔的美洲虎是美洲地区最大的科动物。

Lions are the only cats to live together in big family groups called prides.

子是唯一一种群居的大型科动物。