1 Enoch 86:1-6

Enoch witnesses fallen stars descending from heaven and joining oxen in pastures, where they mate with heifers producing elephants, camels, and asses....

1And again I saw with my eyes as I was sleeping, and I saw the heaven above, and behold, a star fell from heaven, and it arose and ate and pastured among those oxen.

2And after that I saw the great and black oxen, and behold, all of them changed their stalls and their pastures and their calves, and they began to cry out, one with another.

3And again I saw in the vision, and I looked toward heaven, and behold, I saw many stars, and they descended and were cast down from heaven to that first star, and among those heifers and oxen they were with them, pasturing among them.

4And I looked at them and saw, and behold, all of them brought forth their members like horses, and they began to mount upon the cows of the oxen, and they all conceived and bore elephants and camels and asses.

5And all the oxen feared them and were terrified before them, and they began to bite with their teeth and to devour and to gore with their horns.

6And then they began to devour those oxen, and behold, all the children of the earth began to tremble and to quake before them, and to flee.