Monster Manual
Keen Smell. The bear has advantage on Wisdom (Perception) checks that rely on smell.
Multiattack. The bear makes two attacks: one with its bite and one with its claws.
Bite. Melee Weapon Attack: +6 to hit, reach 1 sq., one target. Hit: 8 1d8+4 piercing damage.
Claws. Melee Weapon Attack: +6 to hit, reach 1 sq., one target. Hit: 11 2d6+4 slashing damage.