Bears are ok in my opinion.

There used to be at least 2 different kind, the cave/polar bear looking one was always tough and the brown one was much easier to kill. I have not seen the better bear yet but the brown one even in an army is weaker than it should be imo.

The problem with wolves is that the swarm bonus they receive is bugged.

The elemental damage of Air Shrills, Fire Shrills and Ignys is too low, because their special attack should be really dangerous. I think more monsters should have special abilities, for example Bears should have Cleave and Double Strike instead of Maul.

A level 20 bear is absolutely killer.  He walks up to a guy, hits him once for 12 damage, then hits him again 7 times for 12 damage each, dealing 84 damage total in a single attack.  I typically play as a Beastlord, so I'll often have an army of just bears, and I'll tear through everything.

So, no, bears don't need to be stronger.  

When bears use swarm tactically, it is frightening how much raype they incur on your most prized unit

Adult bears really don't form packs though.  That really doen't make sense.  

One of the low level human enemies, I think it's the syndicate guys with clubs, have way too much health for their level. Like a group of three of them have 50 health or something, this is a weak low level enemy you fight at the same time as enemies with like 3-10 health, and gives about as much exp.

Maybe in Elemental they do? Also one thing's for sure Cubs wouldn't be joining the battle they'd be at home pawing around cat bones.

That does spark an interesting train of thought tho, most successful predators on our planet hunt in packs, Sharks, Wolves, Coyotes, Lions, Hyenas, Whales, and yet bears prefer to go the solo route, or two at the most. Gorillas chill in packs/herds too although they don't hunt per se. Even Alligators and Crocodiles mostly stick together.

Commenting on the post above me, Skeletons are pretty brutal for a fragile bag of bones.