Comparing similar-sized animals for ability scores:
Dire Wolf: Str 25, Dex 15, Con 17, Int 2, Wis 12, Cha 10
Dire Wolverine: Str 22, Dex 17, Con 19, Int 2, Wis 12, Cha 10
Brown Bear: Str 27, Dex 13, Con 19, Int 2, Wis 12, Cha 6
Polar Bear: Str 27, Dex 13, Con 19, Int 2, Wis 12, Cha 6
Rhinoceros: Str 26, Dex 10, Con 21, Int 2, Wis 13, Cha 2