The humans were happily drawing water that the myora kept fresh and sweet for them.
Rescued from a dying world, the oddly appealing humans couldn’t shape reality mentally, lacked telepathy, and had an irrational urge to over-procreate. Some myora even considered humans to be sapient. Those who watched now didn’t care. They were here for entertainment.
The signal came and the culling began, with the smallest humans screaming as they were caught.
This way of managing animals came from the humans’ own history. And since the population had to be kept in check, why not have fun doing so?