Blood Frenzy. The Yaomo has advantage on melee attack rolls against any creature that doesn't have all its hit points.

Relentless (Recharges after a Short or Long Rest). If the Yaomo takes 7 damage or less that would reduce it to 0 hit points, it is reduced to 1 hp instead.

Stench. Any creature other than a Yaomo that starts its turn within 5ft of the Yaomo Ravager must succeed on a DC 12 Constitution saving throw or be poisoned until the start of the creature's next turn. On a successful saving throw, the creature is immune to the stench of all Yaomo Ravagers for 1 hour.

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Ravaging Bite (Recharges after a short or long rest). Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage and the target must succeed on a DC 12 constitution saving throw or take an extra 15 (2d10 + 4) necrotic damage and the Yaomo Ravager regains the same amount of hit points.