On this 1 km2 you have tons of different creatures.
There are no usual wolves that would have make sense but there are lots of unsusual creatures.
Some of them are here for story events, that's fine... But lots of them are supposed to live in this km2 even if they don't have any place to...
The wolves probably left the area when a freaking battleship fell out of the sky and wrecked half the coast or were pushed out of their natural place in the ecosystem by the horde of omnicidal hyena people who canonically slaughter everything on sight.
Or maybe there ARE wolves still in the area and they, being wolves and not mindless attack animals, simply avoid attacking our group like an actual real animal would do.
Even the gnolls are just dropped there... Maybe I miss something but where does these hyena comes from ???
A colony of hyena in the 200m between an inn and an outpost on a trade route ?
This world don't look alive at all... Everything looks completely static with things just dropped one after the other without any reasons and consistency.
Gnolls prefer warm plains by the nature of their condition causes them to roam far and wide to the point that they can show up basically anywhere in the world. Keep in mind Forgotten Realms is not Earth. Faerun does have deserts and warm plains sharing a continent with where this game takes place, so a horde of gnolls showing up is both not impossible and indeed even probable. That is the entire point of gnolls. They roam and a place that might not have seen them in a hundred years could end up being attacked and it is up to adventurers to save the day.
It's the same in the underdark.
This is a cave of 300m2 in which you have tons of different creatures... Even creatures that aren't supposed to be there such as minotaurs.
It's not like it's a colony or something... It's just another handcrafted encounter where they decide to drop minotaurs...
Minotaurs are native to the Underdark. Most of them are in Labyrinth, but there is no lore that suggests that they only ever appear there. Their favored terrain is underground and near ruins and OH LOOK we find them underground near a ruined temple. And even if this weren't the case it isn't like minotaurs never roam. There are minotaur communities above ground too.