diff --git a/Resources/Prototypes/Entities/Markers/Spawners/Conditional/timed.yml b/Resources/Prototypes/Entities/Markers/Spawners/Conditional/timed.yml
index 26d4e3f1d2..050134adbb 100644
--- a/Resources/Prototypes/Entities/Markers/Spawners/Conditional/timed.yml
+++ b/Resources/Prototypes/Entities/Markers/Spawners/Conditional/timed.yml
@@ -56,6 +56,7 @@
         - MobMouse
         - MobMouse1
         - MobMouse2
+        - MobMouseUranium
       # round ~90m
       # one spawner should only spawn ~5 mice for sanity reasons
       # therefore 18m
diff --git a/Resources/Prototypes/Entities/Markers/Spawners/mobs.yml b/Resources/Prototypes/Entities/Markers/Spawners/mobs.yml
index 214a19adff..756f490d08 100644
--- a/Resources/Prototypes/Entities/Markers/Spawners/mobs.yml
+++ b/Resources/Prototypes/Entities/Markers/Spawners/mobs.yml
@@ -16,6 +16,7 @@
       - MobMouse
       - MobMouse1
       - MobMouse2
+      - MobMouseUranium
 
 - type: entity
   name: Cockroach Spawner
@@ -778,8 +779,8 @@
   - type: ConditionalSpawner
     prototypes:
     - MobPenguin
-    
-    
+
+
 - type: entity
   name: Hellspawn Spawner
   id: SpawnMobHellspawn
@@ -793,7 +794,7 @@
   - type: ConditionalSpawner
     prototypes:
       - MobHellspawn
-      
+
 - type: entity
   name: ore crab spawner
   id: SpawnMobOreCrab
diff --git a/Resources/Prototypes/Entities/Mobs/NPCs/animals.yml b/Resources/Prototypes/Entities/Mobs/NPCs/animals.yml
index fcadccdc1a..515e3ea0ee 100644
--- a/Resources/Prototypes/Entities/Mobs/NPCs/animals.yml
+++ b/Resources/Prototypes/Entities/Mobs/NPCs/animals.yml
@@ -3226,3 +3226,37 @@
   - type: ReplacementAccent
     accent: nymph
 
+- type: entity
+  name: Uranium mouse
+  description: It's Cancer Mouse, everybody!
+  parent: MobMouse
+  id: MobMouseUranium
+  components:
+  - type: Sprite
+    color: LightGreen
+  - type: PointLight
+    color: LightGreen
+    radius: 5
+    energy: 5
+    netsync: false
+  - type: RadiationSource
+    intensity: 1
+  - type: Bloodstream
+    bloodReagent: UnstableMutagen
+  - type: SolutionContainerManager
+    solutions:
+      food:
+        reagents:
+        - ReagentId: UncookedAnimalProteins
+          Quantity: 3
+        - ReagentId: Uranium
+          Quantity: 10
+  - type: Butcherable
+    spawned:
+    - id: FoodMeatRat
+      amount: 1
+    - id: SheetUranium1
+      amount: 1
+  - type: Damageable
+    damageContainer: Biological
+    damageModifierSet: Zombie
diff --git a/Resources/Prototypes/GameRules/events.yml b/Resources/Prototypes/GameRules/events.yml
index 9915ef9a3d..dc926f9c76 100644
--- a/Resources/Prototypes/GameRules/events.yml
+++ b/Resources/Prototypes/GameRules/events.yml
@@ -198,6 +198,8 @@
       prob: 0.02
     - id: MobMouse2
       prob: 0.02
+    - id: MobMouseUranium
+      prob: 0.02
     specialEntries:
     - id: SpawnPointGhostRatKing
       prob: 0.005