I never thought something like this could happen... I'll start from the beginning of my adventure, since it hasn't been very long.
Its been several months since I last tried playing an adventurer, so I wanted it to be somewhat memorable. I started out with a human maceman, with a couple levels in swimming, marksmanship, armor-using and shield-using. From there I trained up swimming and throwing to legendary and brought up ambushing to its higher levels, then decided to have some fun with the fishies before weaking true havoc. I jumped in the nearest river and started chasing the blighters down. Before I got there I had killed a couple skeletal bears, almost a dozen wolves and a giant cat of some sort.
First I stealthed, chased after the nearest fish, ambushed/killed it, then moved back up the stream until I could restealth and rinsed/repeated. When I got bored of that I simply chased them down (had perfectly agile, so it wasn't hard), but instead of killing them I just ran past them to the next fish, whacking them around with counterstrikes. after killing about 30 fish this way and working up my weapon/armor/shield skills to around proficient, I decided to give my local goblin towers a visit.
So I ran to the adjacent southern square, stealthed, and worked my way north. Long before I came within sight of it, however, something interested happened.
My combat log got spammed by messages of a goblin ranger shooting down antmen. I didn't think much of it and continued north, getting spam every step of the way. After a while, distracted (and partially blinded) by the messages I ran into a naked mole dog, accidently bashing it halfway across my screen. While I ran to a small depression in the ground to restealth, the messages started getting a little more variety; First, I noticed troglodytes appearing in the fight against the ranger, followed up with some naked mole dogs like the one I killed.
Soon after that, goblin guards and a demon were added on the opposing side, and then... I came into sight of one of the towers, with the ground on the south side littered with troglodyte and antmen corpses, little trails of ichor showing that they had been nocked off the side of the tower. A goblin clothier started appearing in the combat log and I saw the demon off to the west, standing amid a pile of naked mole dog and large rat corpses.
Is it normal to find a goblin tower at war with the local wildlife?