Issue 1. You can attack animals through cliffs and by only attacking in between their "twitches" (attempts to pathfind) the animals can't attack you.
Solution 1. Make animals pathfind around cliffs of any size.
Solution 2. Make animals walk/jump/climb over cliffs.
My only problem with this suggestion is concerning deer. If i stalk one for a bit to get a shot and miss my arrow, they will aggro to me, making me having to flee (if i don't have enough ua to fight it straight up).
If your suggestion is implemented i think deer should always run away from a whiffing arrow to make it more realistic/forgiving. Or maybe just have a small chance to attack ( to suggest a crazy stag or something

) The same should apply for foxes.
As it is now, i find it easier to aggro the deer to a cliff and then shoot it, which might be lame. But i definitely think you should be able to hunt these animals with a bow, without having a lot of ua as well.
It would also be nice to have a way to track a wounded animal. Let´s say i shoot a boar/badger/auroch and it gets away from me after the first shot. I then deaggro and head in the direction it went. Maybe there could be a small trail of blood leading to it and when i finally find it, make it visually bleed or something so i know I'm hunting the right animal.
It sorta feels like there´s no intended way to hunt some animals, which i think, makes players rely on cliff hunting and these other glitches.
I mean, how am I really supposed to kill a bear? I think it should be extremely challenging, but just not near impossible without using glitches.
I like the feeling i get when i stalk my prey and try to line up my shot where i think the animal will be next and i think patience should be greatly rewarded when hunting.
It would be cool to have bear traps that you could place on the ground, along with some bait of some sort. They should be expensive and it could also fail on chance and the bear would lose interest in it.
There could also be a timer attached from when its caught to it breaking free from the trap again, so you would have to finish it off with a bow or by other means.
These are just some suggestions and I know there are a lot of players who are much more experienced in the game then I am ( played in salem and old haven but I´m still a bit of a noob ) who´s probably got better solutions to these issues, but just wanted to throw in my 2 cents or whatever
