Book Preview: Fact #35: Cats Are Placental Mammals


A few mammals lay eggs, believe it or not (duck-billed platypus); others carry their young around in pouches (marsupials like the kangaroo)

But most of us, including cats, keep our unborn young inside, connected to Mom’s bloodstream through temporary tissue, called a placenta, until they’re ready to meet the world.

Placental mammals are dominant everywhere today except Australia–and it’s all because of the K/T (K/Pg) extinction.

Somehow.

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