Swarm of Rats

Medium Beast, Unaligned

AC: 10

Initiative: +0 (10)

HP: 14 (4d8 - 4)

Speed: 30 ft., climb 30 ft.

STR
9 (-1)
DEX
11 (+0)
CON
9 (-1)
INT
2 (-4)
WIS
10 (+0)
CHA
3 (-4)

Resistances: bludgeoning; piercing; slashing

Condition Immunities: charmed; frightened; grappled; paralyzed; petrified; prone; restrained; stunned

Senses: Darkvision 30 ft., Passive Perception 10

CR: 1/4 (XP 50; PB +2)

Habitat: Forest, Swamp, Underdark, Urban

Swarm.

The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain Hit Points or gain Temporary Hit Points.

Actions

Bites.

Melee Attack Roll: +2, reach 5 ft. Hit: 5 (2d4) Piercing damage, or 2 (1d4) Piercing damage if the swarm is Bloodied.

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Swarm of Rats

Source: Monster Manual (2025), p. 370 - Licenses and attribution