Slimes

"Feathers, fur, and excrement..." Eiro summarized, looking at the list of complaints that he had laying on the table in front of him. He had asked for the reports from the monsters that had been put in charge of cleaning in the city, and those were the complaints that showed up the most. 

Excrement was an obvious one, of course, but the shedded fur all over the place and the feathers raining down from above from the harpies every once in a while certainly didn't help either. Not to mention, the harpies did have some of the worst habits in regard to relieving themselves.

Eiro found these things nothing but annoying. Very early on in his life had he learned manners in regard to these things, but that was just because he spent basically his whole life alongside people. And he still didn't know to what extent his former life as the Sage affected his behaviour and personality these days.