Carrion Crawler

Carrion Crawler CR: 2

Large monstrosity, unaligned

Armor Class: 13 (natural armour)

Hit Points: 51 6d10+18

Speed: 30 ft , climb: 30 ft

STR

14 +2

DEX

13 +1

CON

16 +3

INT

1 -5

WIS

12 +1

CHA

5 -3

Skills: Perception +3

Senses: Darkvision 60ft, passive Perception 13

Challenge Rating: 2

Keen Smell. The carrion crawler has advantage on Wisdom (Perception) checks that rely on smell.
Spider Climb. The carrion crawler can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Multiattack. The carrion crawler makes two attacks; one with it's tentacles and one with it's bite.
Tentacles. Melee Weapon Attack +8 to hit, reach 5 ft, one creature. Hit 4 1d4+2 poison damage, and the target must succeed on a DC 13 Constitution saving throw or be poisoned for one minute. Until this poison ends, the target is paralyzed. The target can repeat the saving throw at the end of each of it's turns, ending the poison on itself on a success.
Bite. Melee Weapon Attack +8 to hit, reach 5 ft, one target. Hit 7 2d4+2 piercing damage.

Large creature being a cross between a worm and a centipede. They have a mouth filled with layers of teeth, and tentacles on either side of them to help shovel food in, and sense food nearby.

Suggested Environments

In any place, including the Underdark, where living food, or dead remains are common.