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.

To Handle. Adopted Wolf is presumed to be taking the dodge action during combat if not commanded otherwise. Adopted Wolf will take any non-attacking action on an Animal Handling role of 12 or higher and will take the command to attack if the role is 17 or higher. A natural 1 will make the wold unresponsive for the rest of the combat. All commands must be made before the skill check is rolled.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) piercing damage. If the target is a creature, it must succeed on a DC 11 Strength saving throw or be knocked prone.