| 1. | The males in the herd protect the females and the young .
兽群中的雄性动物保护雌性动物和幼仔。 |
| 2. | In the rat and rabbit, neonates are born blind, naked and with a poorly developed thermoregulatory system .
大鼠和兔子的初生幼仔出生时是闭目无毛的，体温调节系统发育不足。 |
| 3. | In ungulates, the young are born in an advanced stage of development and can fend for themselves in a few days .
有蹄目动物的幼仔出生时处于发育的高级阶段，能够在几天内照料自己。 |
| 4. | They then produce similarly strong young
然后他们繁殖出同样强壮的幼仔。 |
| 5. | Such poor souls are known as lost cubs
这些可怜的灵魂被称为迷徒幼仔。 |
| 6. | Mother carried hatchling to water , urges them to swim
妈妈携带刚孵化的幼仔到水边，敦促他们下水。 |
| 7. | Lioness coming to the aid of her cub
母狮帮助自己的幼仔 |
| 8. | Others preferred to run with the wolves , raising litters of cubs
另一些则与狼同行，饲养一窝窝的幼仔。 |
| 9. | When food is short , only one of the two chicks may survive
在食物缺乏的季节，两只幼仔中只有一只能存活。 |
| 10. | Most animals let their young fend for themselves from an early age
大多数动物让他们的幼仔从小就独立生活。 |
