Book of Enoch (1 Enoch) 86:4
And I looked at them and saw, and behold they all let out their privy members, like horses, and began to cover the cows of the oxen, and they all became pregnant and bare elephants, camels, and asses.
Background and history of Book of Enoch (1 Enoch), and issues with this book.
R. H. Charles, The Book of Enoch (London: SPCK, 1917), public domain. The verse text is the English Wikisource transcription of that translation. Charles’s editorial signs are kept. He rearranges some verses in chapters 5, 39, 90, 91, and 106, so those chapters are not a straight 1, 2, 3 sequence.