Bulls are pretty important in the various Mediterranean cultures. Where they pop up they're often directly connected to the gods, be it as a god incarnate (Zeus, Osiris), a divine-sent monster (Cretan Bull, Bull of Heaven), or a half-man half-bull creature. Which brings us to Kusarikku, literally "Bull Man".
Of all the peoples the various Mesopotamian cultures have had especially close connections to the bull, or the bison as it were. Back before they were relegated to areas of Belarus and Poland the European bison coexisted with the aurochs and water buffalo in the region. Bison were known to inhabit the hilly mountains, which they were directly compared to. Something about seeing them silhouetted against the sun, or the distinctive ridge of their backs. So of course they were one of the most prominent mythologized beasts. In fact, Kusarikku isn't the only bull-human chimera in the region. While it's believed Kusarikku simply began as a normal bull, given time he was distinguished from the human-headed bull called the alim in Sumerian. And it's also separate from the famous deity Lamassu. Lots of bull people. Kusarikku is something of a faun, but with bull parts instead of goat ones. As mentioned before he had a very close relationship to Lahmu and the two could often be seen depicted together. Some assumed that Lahmu and Kusarikku were early fore-bearers to Gilgamesh and Enkidu, but this connection is unproven.
Like Lahmu, Kusarikku was probably a domestic spirit who frightened and fought off evil spirits. Clay plaques and statuettes of him have been found in this manner inside houses. One inscription tells of a baby crying, awaking a Kusarikku in the house who shouts, "who woke me up, who startled me?" This is probably a small domestic echo of Enlil's angry shout at the clamor of young humankind waking him up. Another story tells of Ninurta battling and slaying a Kusarikku, a by-product of other business in the mountains.
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AGH. This one gave me some trouble. The first draft of him I did sucked ass. The pose was boring, the facial expression was tired and uninteresting, and I FUCKING messed up the line-art size. I'm trying to go for visual consistency throughout all these drawings damnit! I gave him a sort of football player-esque pose to mimic a bull pawing the ground before charging. Also, his entire body is covered in long hair, excluding his face, hands, and chest. It must get cold up on the mountains. Like Lahmu he occupies a really weird spot where he's both a servant of the gods and enemy of them. Of the three or four myths featuring him, two of them are about him fighting a god (be it Marduk or Ninurta), losing, and serving him as an apotropaic spirit afterwards.
Next time, more animal men, this time delving briefly into the arachnid family.