John Calvin on Isaiah 14:23

23. And I will make it to be a possession of the hedgehog. {Bogus footnote} He again confirms the same things which he formerly predicted, namely, that henceforth it will not be a habitation of men, but will resemble a hideous cavern, in which wild beasts shall lurk. קפד (kippod) is rendered by some a beaver, by some a tortoise, and by others a hedgehog. From the connection of the passage, it is probable that the Prophet spoke of an animal that is found near the water; for he afterwards mentions pools of water. This applies strictly to the situation of the place, for though Babylon did not lie in a marsh, yet it lay in a moist place, the country around it being watered on one side by the Euphrates, and on the other by the Tigris. Hence the Lord threatens to bring a deluge upon it. {Bogus footnote}