What difference between human and non-human biology allows for non-human animals to give birth to such large litters, versus humans who have so few, comparatively?
In: Biology
Cats and dogs have a tube in the middle with several individual wombs branching off to the sides. Each kitten or puppy grows in its own womb and is born through the tube. Humans and other large mammals like cows and horses eg, have one womb. If they have more than one baby they all have to grow together in the same womb at the same time.
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