The reason is a microscopic organism called Toxoplasma gondii.

原因在于一种叫做刚地弓形的微物。

Wolves infected with toxoplasma are more likely to wander away from their former pack to find a new one and are more risk-taking, more bold.

感染弓形的狼更有可原来的狼群去寻找新的狼群，而且更冒险，更大胆。

For example, mice infected with Toxoplasma were quicker to check out the far reaches of an elevated maze than their uninfected comrades.

例如，相比未感染老鼠，感染弓形的老鼠会更快地检查遥远高处的迷宫。

In fact it's one of the most stable arches in nature, so sound that we still use it today.

事实上，这是自然界中最稳固的弓形之一，如今我们仍然常常用到。

Right whales have round bodies with arching rostrums, V-shaped blowholes and dark grey or black skin.

露脊鲸有圆形的身体，弓形的吻部，V 形的喷气孔和深灰色或黑色的皮。

A similar process happens with toxoplasma and mice which breeds in the digestive system of cats.

类似的过程发在猫的消化系统中繁殖的弓形和老鼠身上。

Definitely behaviour that is beneficial to toxoplasma, but absolutely not for the rodent.

绝对是有益于弓形的行为，但绝对不是啮齿动物。

In the United States, it's less ubiquitous and we don't find that there's a need to test for it.

在美国，弓形的普遍性较低，因此我们认为没有必要进行检测。

Rodents that get infected with toxoplasmosis actually makes these rodents attracted to cat urine.

感染弓形病的啮齿动物实际上会被猫尿所吸引。

That's because some cats carry a parasite called toxoplasmosis and it can cause birth defects.

这是因为一些猫携带一种叫做弓形的寄，可会导致胎儿畸形。

In other countries, like in Europe, specifically France, there can be a higher level of exposure to toxoplasmosis because of undercooked meats and cheeses and things that may expose patients to parasites.

在其他国家，比如欧洲，特别是法国，由于未煮熟的肉类、奶酪等食物，弓形的暴露风险可更高。

Infected rodents are more reckless and have slower reaction times.

感染了弓形的啮齿动物会变得更加鲁莽，反应时间也会变慢。

She came across a familiar looking floor plan in a book about the bow house.

她在一本关于弓形屋的书中发现了一个看起来很熟悉的平面图。

So I wanted to make a bowed lyre with a deeper sound.

所以我想制作一把音色更深的弓形里拉琴。

Selecting from the few queer houses upon Mill Pond Bank a house with a wooden front and three stories of bow-window (not bay-window, which is another thing), I looked at the plate upon the door, and read there, Mrs. Whimple.

我从 Mill Pond Bank 上的几栋古怪的房子中挑选了一栋木头正面和三层楼的弓形窗（不是凸窗，这是另一回事）的房子，我看着门上的牌子，在那里读到，夫人。鞭策。

The next morning when I awoke and looked out of the bow window of the big old-fashioned bedroom, I saw under a gray sky a country that was still all mystery.

第二天早上，当我醒来，从那间老式大卧室的弓形窗外望去，我看到在灰色的天空下，一个仍然充满神秘色彩的国家。

We now slowly ascended a drive, and came upon the long front of a house: candlelight gleamed from one curtained bow-window; all the rest were dark.

我们缓缓地驶上车道，来到宅子正面。烛光从一扇拉上窗帘的弓形窗里透出来，其余的窗口都是黑洞洞的。

On such evenings Margaret was apt to stop talking rather abruptly, and listen to the drip-drip of the rain upon the leads of the little bow-window.

在这样的晚上，玛格丽特很容易突然停止说话，倾听雨滴打在小弓形窗的引线上的声音。

Diffuse gas in the two galactic haloes would compress on collision, forming a curved structure like the bow wave from a ship moving through water.

两个星系晕中的弥散气体在碰撞时会压缩，形成类似船只在水中移动时产的弓形波的弯曲结构。

If you are a rat and you have toxoplasmosis, you are perfectly healthy except for one thing.

如果你是只患有弓形病的老鼠，除了一件事外， 你是健康的。