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51. Opossums have the shortest known gestation period in the animal kingdom.
52. Hamsters, mice, rabbits, rats, gerbils, and dogs each have quick pregnancies.
53. Short gestation periods are an essential adaptation for survival.
54. Efficient reproduction allows for rapid population growth.
55. These animals exemplify the diverse strategies of reproduction in nature.
56. Adaptations in gestation periods ensure species longevity and success.