# Monsters by Habitat; Swamp Monsters *Source: Monster Manual (2024) p. 375* **Swamp Monsters** | CR | Monsters | |----|----------| | 0 | [Frog](/Rules/Source/bestiary/beast/frog-xmm.md), [Lizard](/Rules/Source/bestiary/beast/lizard-xmm.md), [Rat](/Rules/Source/bestiary/beast/rat-xmm.md), [Raven](/Rules/Source/bestiary/beast/raven-xmm.md), [Spider](/Rules/Source/bestiary/beast/spider-xmm.md) | | 1/8 | [Giant Rat](/Rules/Source/bestiary/beast/giant-rat-xmm.md), [Kobold Warrior](/Rules/Source/bestiary/dragon/kobold-warrior-xmm.md), [Stirge](/Rules/Source/bestiary/monstrosity/stirge-xmm.md), [Venomous Snake](/Rules/Source/bestiary/beast/venomous-snake-xmm.md) | | 1/4 | [Bullywug Warrior](/Rules/Source/bestiary/fey/bullywug-warrior-xmm.md), [Constrictor Snake](/Rules/Source/bestiary/beast/constrictor-snake-xmm.md), [Giant Frog](/Rules/Source/bestiary/beast/giant-frog-xmm.md), [Giant Lizard](/Rules/Source/bestiary/beast/giant-lizard-xmm.md), [Giant Venomous Snake](/Rules/Source/bestiary/beast/giant-venomous-snake-xmm.md), [Mud Mephit](/Rules/Source/bestiary/elemental/mud-mephit-xmm.md), [Swarm of Rats](/Rules/Source/bestiary/beast/swarm-of-rats-xmm.md), [Swarm of Ravens](/Rules/Source/bestiary/beast/swarm-of-ravens-xmm.md), [Winged Kobold](/Rules/Source/bestiary/dragon/winged-kobold-xmm.md) | | 1/2 | [Crocodile](/Rules/Source/bestiary/beast/crocodile-xmm.md), [Swarm of Insects](/Rules/Source/bestiary/beast/swarm-of-insects-xmm.md) | | 1 | [Ghoul](/Rules/Source/bestiary/undead/ghoul-xmm.md), [Giant Spider](/Rules/Source/bestiary/beast/giant-spider-xmm.md), [Giant Toad](/Rules/Source/bestiary/beast/giant-toad-xmm.md), [Lacedon Ghoul](/Rules/Source/bestiary/undead/lacedon-ghoul-xmm.md), [Ogrillon Ogre](/Rules/Source/bestiary/giant/ogrillon-ogre-xmm.md), [Yuan-ti Infiltrator](/Rules/Source/bestiary/monstrosity/yuan-ti-infiltrator-xmm.md) | | 2 | [Black Dragon Wyrmling](/Rules/Source/bestiary/dragon/black-dragon-wyrmling-xmm.md), [Ghast](/Rules/Source/bestiary/undead/ghast-xmm.md), [Giant Constrictor Snake](/Rules/Source/bestiary/beast/giant-constrictor-snake-xmm.md), [Lizardfolk Geomancer](/Rules/Source/bestiary/elemental/lizardfolk-geomancer-xmm.md), [Ogre](/Rules/Source/bestiary/giant/ogre-xmm.md), [Swarm of Stirges](/Rules/Source/bestiary/monstrosity/swarm-of-stirges-xmm.md), [Swarm of Venomous Snakes](/Rules/Source/bestiary/beast/swarm-of-venomous-snakes-xmm.md), [Will-o'-Wisp](/Rules/Source/bestiary/undead/will-o-wisp-xmm.md) | | 3 | [Green Hag](/Rules/Source/bestiary/fey/green-hag-xmm.md), [Mummy](/Rules/Source/bestiary/undead/mummy-xmm.md), [Wight](/Rules/Source/bestiary/undead/wight-xmm.md), [Yuan-ti Malison (Type 1)](/Rules/Source/bestiary/monstrosity/yuan-ti-malison-type-1-xmm.md)/[Yuan-ti Malison (Type 2)](/Rules/Source/bestiary/monstrosity/yuan-ti-malison-type-2-xmm.md)/[Yuan-ti Malison (Type 3)](/Rules/Source/bestiary/monstrosity/yuan-ti-malison-type-3-xmm.md) | | 4 | [Bullywug Bog Sage](/Rules/Source/bestiary/fey/bullywug-bog-sage-xmm.md), [Chuul](/Rules/Source/bestiary/aberration/chuul-xmm.md), [Hippopotamus](/Rules/Source/bestiary/beast/hippopotamus-xmm.md), [Lizardfolk Sovereign](/Rules/Source/bestiary/elemental/lizardfolk-sovereign-xmm.md) | | 5 | [Giant Crocodile](/Rules/Source/bestiary/beast/giant-crocodile-xmm.md), [Revenant](/Rules/Source/bestiary/undead/revenant-xmm.md), [Shambling Mound](/Rules/Source/bestiary/plant/shambling-mound-xmm.md), [Troll](/Rules/Source/bestiary/giant/troll-xmm.md), [Water Elemental](/Rules/Source/bestiary/elemental/water-elemental-xmm.md) | | 6 | [Ghast Gravecaller](/Rules/Source/bestiary/undead/ghast-gravecaller-xmm.md) | | 7 | [Graveyard Revenant](/Rules/Source/bestiary/undead/graveyard-revenant-xmm.md), [Young Black Dragon](/Rules/Source/bestiary/dragon/young-black-dragon-xmm.md), [Yuan-ti Abomination](/Rules/Source/bestiary/monstrosity/yuan-ti-abomination-xmm.md) | | 8 | [Hydra](/Rules/Source/bestiary/monstrosity/hydra-xmm.md) | | 10 | [Haunting Revenant](/Rules/Source/bestiary/undead/haunting-revenant-xmm.md) | | 14 | [Adult Black Dragon](/Rules/Source/bestiary/dragon/adult-black-dragon-xmm.md) | | 15 | [Mummy Lord](/Rules/Source/bestiary/undead/mummy-lord-xmm.md) | | 21 | [Ancient Black Dragon](/Rules/Source/bestiary/dragon/ancient-black-dragon-xmm.md) | ^swamp-monsters