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What makes the young of the kangaroo different from young cows elephants or lions?
Wiki User
∙ 10y ago
Kangaroos are marsupials while cows, elephants and lions are placental mammals. What this means is that kangaroo joeys, like other marsupial young, are born very undeveloped, after a short gestation period. Moving purely by instinct, the baby joey (the term for all marsupial young) makes its way to the mother's pouch, where the young joey latches onto a teat, remaining there to continue its growth and development. The young of placental mammals are well developed when born, and are able to survive independently of the mother, given the right care. Marsupial joeys cannot. Regarding monotremes, they are completely different mammals again, not bearing live young like marsupials and placental mammals, but laying eggs for reproduction.
Many marsupials have the mammary glands enclosed within a protective pouch. This is where the young feed on the mother's milk. The teat swells in the joey's mouth, which secures it in place, whereas with placental mammal young, they feed as they need to. They are capable of surviving without the mother, as long as they receive their nutrients from another suitable source. No joey can survive without its mother for several weeks, at least.
Wiki User
∙ 10y ago
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Baby lions, cows and elephants are fully developed and mostly fully functional immediately after birth. A kangaroo is at birth little more than a tiny embryo that can only crawl from the mother's womb into her pouch to develop there further.
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Baby lions, cows and elephants are fully developed and mostly fully functional immediately after birth. A kangaroo is at birth little more than a tiny embryo that can only crawl from the mother's womb into her pouch to develop there further.
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What makes the young of the kangaroo different from cows elephants or lions?
Kangaroos are marsupials while cows, elephants and lions are placental mammals. What this means is that kangaroo joeys, like other marsupial young, are born very undeveloped, after a short gestation period. Moving purely by instinct, the baby joey (the term for all marsupial young) makes its way to the mother's pouch, where the young joey latches onto a teat, remaining there to continue its growth and development. The young of placental mammals are well developed when born, and are able to survive independently of the mother, given the right care. Marsupial joeys cannot. Regarding monotremes, they are completely different mammals again, not bearing live young like marsupials and placental mammals, but laying eggs for reproduction.Many marsupials have the mammary glands enclosed within a protective pouch. This is where the young feed on the mother's milk. The teat swells in the joey's mouth, which secures it in place, whereas with placental mammal young, they feed as they need to. They are capable of surviving without the mother, as long as they receive their nutrients from another suitable source. No joey can survive without its mother for several weeks, at least.
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