（漢語官方簡介）貓貓科動物是進化得最成功的一群動物。除了澳洲和南極洲，所有大陸都有原生貓科動物。貓科動物形形色色，小從無害的家貓，大到萬獸之王獅子，以及陸地上速度 最快的獵豹；但牠們之間的差異有多大？貓科動物的種類有很多，牠們的體型差異極大，但牠們具備相同的本能，行為也類似。牠們在胚胎時期時擁有許多共同特征。觀眾將從本節目中了解，小貓和幼獅在尚未出生之前，發育出哪些生理結構，使得牠們長大后變成超強掠食動物。犬本節目追蹤三種家犬和牠們的祖先灰狼，在子宮內從受精到出生的發育過程。我們可從這幾種動物的胚胎發育過程中，明白牠們的血緣有多相近，及牠們為何會有極 大的差異。這三種狗的體型和功能相異：拿波里獒犬是古羅馬時期皇帝的看門狗，小型吉娃娃是名人的玩賞犬，黃金獵犬則是最受人喜愛的獵犬。觀眾將可藉由視覺 特效、電腦動畫和即時超音波影片，從特殊觀點深入了解狗胚胎的發育過程。（英語官方簡介）Supported by amazing visual effects, computer graphics and real-time, moving ultra-sound pictures In the Womb: Cats and Dogs gives us a unique view into the world of dog and cats in-utero development.In the Womb: Cats follows the development of one of the most successful animal groups. They come in all shapes and sizes; from the small, harmless house cat, to the King of Beasts, the lion, to the fastest animal on land, the cheetah. They're certainly different species and vastly differing sizes, but they share many of the same characteristics as they grow in the womb. Discover what kittens and cubs acquire before they're even born that equips them to be skilled predators when they're grown up.In the Womb: Dogs follows the development—from fertilization to birth—of three domesticated dogs and their single ancestor, the gray wolf. By following their fetal development, explore just how closely related they are, as well as what it is that makes them so distinct. Our three breeds are different in both form and function: the giant Neapolitan Mastiff, bred as a guard dog to Roman emperors, the tiny Mexican Chihuahua, and the ever popular golden Retriever.

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