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  1. Born blind and naked and weighing about 0.13 gram (0.0046 ounce) apiece, these tiny, larvalike young crawl upward using their forelimbs as they seek the mother’s fur-lined pouch. Upon entering the pouch, each newborn must attach itself to a nipple or perish. Each pouch young remains firmly attached to the nipple for the first 50–55 days of life.
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    Born blind and naked and weighing about 0.13 gram (0.0046 ounce) apiece, these tiny, larvalike young crawl upward using their forelimbs as they seek the mother’s fur-lined pouch. Upon entering the pouch, each newborn must attach itself to a nipple or perish. Each pouch young remains firmly attached to the nipple for the first 50–55 days of life.
    www.britannica.com/animal/Virginia-opossum
    Each litter has four to 25 young that are about 0.5 inches (14 millimeters) long when born. The young opossums climb into their mother’s pouch right after birth and remain there for about two weeks, until fully developed. The young are weaned after 105 days but can start eating solid food before weaning.
    nationalzoo.si.edu/animals/virginia-opossum
    Baby Virginia opossums are born hairless and sightless and are about the size of a honeybee. They are essentially, as nature writer Ted Williams notes, walking embryos. Immediately upon birth, they have to use their small but strong front legs to clamber into the pouch.
    blog.nature.org/2021/05/11/strange-and-surprising …
    When born Virginia Opossums are “honey bee sized,” about 14 mm long and 0.13 to 0.20 grams. While born very underdeveloped, babies do have very strong front legs. They are also born in groups of 4 to 25, though females only have 13 mammae some of which may be nonfunctional.
    biodiversity.earthathome.org/species/didelphis-virgi…
    Virginia Opossums are North America’s only marsupials, and, like kangaroos and koalas in Australia, their young are born extremely under-developed with only vestigial back legs, ears, and eyes, and no fur. Several weeks later, the joeys are much larger and have fur! Mom continues to keep them safe in her marsupium.
    discoverwildcare.org/opossum-mama-and-family/
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  9. Basic Information Sheet: Virginia Opossum

    2018年7月6日 · The Virginia opossum is the only marsupial native to North America. This New World species is correctly called an “opossum” as opposed to the Old World “possum”.

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