... PoLar bear cubs北极熊幼崽 Looking after the cubs照料幼崽 Unusua polar bear facts北极熊异事 ...
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短尾矮袋鼠的体型与弗吉尼亚负鼠相差无几，但负鼠幼崽的哺育期是短尾矮袋鼠幼崽的三倍长，且公负鼠与母负鼠对每只幼崽的照料也更多。 负鼠的脑袋是短尾矮袋鼠的两倍大。
Quokkas are about the same size as Virginia opossums, but baby quokkas nurse for three times as long, their parents invest more in each baby, and their brains are twice as big.
三只马来亚虎幼崽在辛辛那提动物园保育中心接受照料。
And three Malayan tiger cubs are being cared for in the Cincinnati Zoo's nursery.
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