Unusually Sized Rodent

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

Keen Smell. The rodent has advantage on Wisdom (Perception) checks that rely on smell.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) piercing damage. The rodent has advantage on its attack roll as long as it has the target grappled.

Leaping Tackle. Ranged Weapon Attack: +4 to hit, reach 10 ft., one target. Hit: 4 (1d4 +2) bludgeoning damage. The target must succeed on a DC 13 saving throw or be knocked prone and receive an additional 3 (1d4 +1) bludgeoning damage. If the target is surprised it makes the saving throw with disadvantage and the rodent has advantage on the attack roll.