Armor Class 12
Hit Points 7 (2d6)
Speed 30 ft.
Senses darkvision 60 ft., passive Perception 10
Languages —
Challenge 1/8
Keen Smell. The rat has advantage on Wisdom (Perception) checks that rely on smell.
Pack Tactics. The rat has advantage on an attack roll against a creature if at least one of the rat's allies is within 5 feet of the creature and the ally isn't incapacitated.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Monster Manual (2014), p. 327