Keen Hearing and Smell. The wolf has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Pack Tactics. The wolf has advantage on attack rolls against a creature if at least one of the wolf's allies is within 5 feet of the creature and the ally isn't incapacitated.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 9 (2d4 + 5) piercing damage. If the target is a creature, it must succeed on a DC 12 Strength saving throw or be knocked prone.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d4 + 5) slashing damage

Vibe

Opportunity Attack. The wolf can make an opportunity attack when a hostile creature that it can see moves out of its reach. To make the opportunity attack, it uses its reaction to make one melee attack against the provoking creature. The attack occurs right before the creature leaves its reach.