The Gilgamesh epic includes an account of the conception and birth of the large hairy animal-man Enkidu, who became the friend of Gilgamesh. 

There were stars in the heavens.  One fell down toward me, as if it were among the heavenly host…[1]  Gilgamesh, someone like you has indeed been born in the wild grasslands…[2]  A god-like peer has arrived for Gilgamesh."[3]

As in Enoch, the falling of a star symbolizes the descent of a heavenly being such as an angel or god.  It is the harbinger to procreation between mortals and angels.   

     Enkidu appears to have been a frankenstein monster of sorts, patched together from animal DNA and human DNA.  The epic recounts that Enkidu's "whole body is covered with hair," and "he eats grass with the antelope."[4]  Like the celebrated Roman demi-gods Romulus and Remus, Enkidu "sucked the milk of wild animals."[5]  The text asks Enkidu,

Enkidu, you are like a god.  Why do you wander with the animals, grazing in the wild grasslands?[6]

          It is further outlined in The Testament of Solomon, an apocryphal Jewish text, that these angel-animal-human hybrids become demons in the afterlife.  The principle Zoroastrian demon Akkoman, who is called Asmodeus in the Judea-Christian tradition, is recorded to have told King Solomon, "Although I was born from a human mother, I am the son of an angel."[7]  Another demon is said to have the chest and stomach of a beautiful woman, but the legs of a jackass.  She reports, "I have a many-sided character."  Solomon asked her where she came from, to which she replied that she traced her origin to a place called "the black heaven."[8]  Another demon attests, "I am the ghost of a giant who died."[9]  The story describes several other demons who show signs of being the disembodied spirits of hybrid species.  Among them are humans, cows, and reptiles, which have faces like birds, the sphinx, and other beasts.