A good question. First, if you're ever curious about lore, be sure to read the stuff on Scratch's computer, lots of basic stuff covered there. But to be fair, I didn't touch on this directly, it's more implied. There are two "areas" in the city, the normal ruins and the barrens, the desert-ish areas. The normal ruins are further divided into four types of areas: Haven, Gutter, Tower, and everywhere else. The hyenas more or less stick to the Gutter normally, their post-apocalyptic Los Vegas/redlight district. The Boars roam around that "everywhere else. The Hyenas have nothing inherently against them, they'll let anyone in with money or goods, but the boars tend to be too chaotic and destructive, which is why there aren't any in the Gutter we see in GT: they're bad for business.
Now, as time goes on a variety of different groups may end up settling into Haven, first secretly, then more openly depending on player choice. And yes, this will mean both boars and hyenas being there. For the most part though, this won't be an issue, as they'll be operating in different areas and staying subtle at first. Eventually, the final stage in each of their sub-quests will be domination of the area, which will probably mean the other just disappears, but I haven't worked out the details yet.
Also, that's an interesting way you have of spelling. Not ragging on it, I'm just curious where it comes from. It almost seems like you're trying to deliberately phonetically reproduce some kind of dialect. Which is interesting, because most people don't "type with an accent", outside of fiction.