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 an attack roll 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.

Go for the Throat. If the target is prone, the wolf can make one Bite attack against it as a bonus action.

Actions

Bite. Melee Weapon Attack: +6 to hit, reach 5ft., one target. Hit 11 (2d6 + 4) piercing damage . If the target is a creature, it must succeed on a DC 14 Strength saving throw or be knocked prone.