Mommy, where to snakes come from?

IronWaffle5x5

I've been wondering if there was a fixed snake spawner somewhere but I don't think there is. There always seem to be more snakes in the top right corner of my town, maybe because I put the whacking day items there, stalls and banners.

jasonicus321

Seems pretty random to me. But I do see many in the eastern part of town.