Template talk:Did you know nominations/Mammalian kidney

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... that, among the vertebrates, only the kidneys of mammals and birds can produce concentrated urine? [2023-04-03 at 20:51:01, by BorgQueen]
... that, amongst the vertebrates, only the kidneys of mammals and birds can produce concentrated urine? [2023-04-03 at 20:54:17, by BorgQueen]

... that, amongst the vertebrates, only the kidneys of mammals and birds can produce concentrated urine? [2023-04-03 at 20:54:17, by BorgQueen]
... that, amongst the kidneys of the vertebrates, only the those of mammals and birds can produce concentrated urine? [2023-04-03 at 22:27:08, by BorgQueen]
... that, amongst the kidneys of the vertebrates, only those of mammals and birds can produce concentrated urine? [2023-04-03 at 22:27:29, by BorgQueen]