Austroraptor

Keen Hearing and Smell. The Austroraptor has advantage on perception checks that rely on hearing or smell.

Pack Tactics. The Austroraptor 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.

Pounce: Raptors can grapple creatures of any size, however if a creature is one size larger than them the grapple works different. The raptors speed becomes 0 and the raptor immedieatly attaches itself to the creature it is trying to grapple, while the raptor is attached attacks against the grappled creature get a +2 to attack and damage rolls however the grappled creature has advantage on attack rolls against the raptor, if the raptor wants to end the grapple it must use its action to get off the creature.

Multiattack: The Austroraptor can make 3 attacks every turn, one with its bite and two with its claws.

Bite. Melee weapon attack: +5 to hit, hit: 8 (2d4+3) piercing damage.

Claw: Melee weapon attack: +5 to hit, hit: 7 (1d6+3) slashing damage.