[@Jerkchicken] Each bear species has its own Skills that enable it to fulfill its roles, as well as distinct 'Basic Attack' damage (Basic Attacks are, well, Basic Attacks that aren't Skills) and defenses.
[@Sombrero] Good ideas, but- koalas aren't bears, and neither are raccoons. Glad you think it'd be fun, though. I'll re-assign Classes if I feel like it. I've also added secret roles (which you will not be informed of) and added a Necromancer. Finally, if you'd like, I have reasons why I assigned each role to each bear.

Grizzly Bear - Warrior: It's a generic bear.
Panda Bear - Cleric: It's Chinese, also China has its own mythology.
Sunbear - Rogue: Smallest bear in existence (besides Waterbears).
Sloth Bear - Monk: Its fluffy tufts of hair make it look like a monk??? (source: google images)
Spectacled Bear - Sorcerer: Glasses = magical
Polar Bear - Paladin: They're big, they're protective, and I guess to me snow is like cooling and shit so = it heals? my logic is weird
North American Black Bear - Runemaster: They mark trees with claws and teeth = secret runes. omg I discovered the next conspiracy
Asiatic Black Bear - Druid: I guess the Asians are very in touch with nature (because rice farming- wait that's racist even though I'm Asian- AUTORACISM!), therefore they must be Druids of some sort.
Giant Short-faced Bear - Necromancer: They're extinct.

(+) secret species