Giant Rat, AC: 12

STR -2 DEX +2 CON INT -4 WIS CHA -3

Keen Smell: Advantage on WIS (perception) checks involving smell.

Pack Tactics: Advantage on attack rolls against a creature if within 5 ft of a non-incapacitated ally

Bite: Melee Attack: +4 to hit, reach 5 ft, 1 target. Hit: (1d4 +2) pierce dmg. Creature targets make DC10 CON save. On fail, become diseased. Until cured, target can't regain HP except through magic, and max HP decreases by (1d6) every 24 hours.