diff --git a/data/json/monster_special_attacks/feral_weapon_attacks.json b/data/json/monster_special_attacks/feral_weapon_attacks.json
index ed1b58f3775a9..0a1519636c55f 100644
--- a/data/json/monster_special_attacks/feral_weapon_attacks.json
+++ b/data/json/monster_special_attacks/feral_weapon_attacks.json
@@ -414,23 +414,6 @@
     "no_dmg_msg_u": "%1$s hits your %2$s without penetrating your armor.",
     "no_dmg_msg_npc": "%1$s hits <npcname>'s %2$s without penetrating their armor."
   },
-  {
-    "type": "monster_attack",
-    "attack_type": "melee",
-    "id": "feral_weapon_feral_m9",
-    "cooldown": 1,
-    "move_cost": 90,
-    "accuracy": 4,
-    "//": "Feral melee skill + weapon's to hit, so 6-2=4",
-    "damage_max_instance": [ { "damage_type": "bash", "amount": 7 } ],
-    "condition": { "test_eoc": "is_disarmed" },
-    "hit_dmg_u": "%1$s hits your %2$s with a gun!",
-    "hit_dmg_npc": "%1$s hits <npcname>'s %2$s with a gun!",
-    "miss_msg_u": "%1$s tries to hit you, but you dodge!",
-    "miss_msg_npc": "%1$s tries to hit <npcname>, but they dodge!",
-    "no_dmg_msg_u": "%1$s hits your %2$s without penetrating your armor.",
-    "no_dmg_msg_npc": "%1$s hits <npcname>'s %2$s without penetrating their armor."
-  },
   {
     "type": "monster_attack",
     "attack_type": "melee",
diff --git a/data/mods/DinoMod/monstergroups/lab.json b/data/mods/DinoMod/monstergroups/lab.json
index 8bc3be0bcaa72..7b7882ce4df8f 100644
--- a/data/mods/DinoMod/monstergroups/lab.json
+++ b/data/mods/DinoMod/monstergroups/lab.json
@@ -22,7 +22,7 @@
     "type": "monstergroup",
     "name": "GROUP_BIO_DINO_PRED",
     "monsters": [
-      { "monster": "mon_spinosaurus", "weight": 100, "cost_multiplier": 20, "starts": "3 days", "ends": "28 days" },
+      { "monster": "mon_spinosaurus_bio_op", "weight": 100, "cost_multiplier": 20, "starts": "3 days", "ends": "28 days" },
       { "monster": "mon_zpinosaurus", "weight": 25, "cost_multiplier": 30, "starts": "3 days" },
       { "monster": "mon_zpinosaurus", "weight": 25, "cost_multiplier": 30, "starts": "7 days" },
       { "monster": "mon_zpinosaurus", "weight": 25, "cost_multiplier": 30, "starts": "28 days" },
diff --git a/data/mods/TropiCataclysm/monsters/tropical_zombies.json b/data/mods/TropiCataclysm/monsters/tropical_zombies.json
deleted file mode 100644
index 96e9ca349b133..0000000000000
--- a/data/mods/TropiCataclysm/monsters/tropical_zombies.json
+++ /dev/null
@@ -1,12 +0,0 @@
-[
-  {
-    "id": "mon_zandcrawler",
-    "type": "MONSTER",
-    "copy-from": "mon_beekeeper",
-    "name": { "str": "zandcrawler" },
-    "description": "A calloused and misshaped form that seems to have adapted to the harsh, dry environment.",
-    "speed": 90,
-    "death_drops": "mon_zombie_swimmer_death_drops",
-    "extend": { "flags": [ "CAN_DIG" ] }
-  }
-]
diff --git a/data/mods/desert_region/desert_monsters.json b/data/mods/desert_region/desert_monsters.json
index 3861a78e4da0c..0d40ee3a48006 100644
--- a/data/mods/desert_region/desert_monsters.json
+++ b/data/mods/desert_region/desert_monsters.json
@@ -54,15 +54,5 @@
     "extend": { "flags": [ "POISON", "NO_BREATHE" ] },
     "delete": { "flags": [ "HEARS", "ANIMAL", "PATH_AVOID_DANGER", "WARM", "GROUP_MORALE", "GOODHEARING", "SWARMS" ] },
     "armor": { "bash": 3, "cut": 1 }
-  },
-  {
-    "id": "mon_zandcrawler",
-    "type": "MONSTER",
-    "copy-from": "mon_beekeeper",
-    "name": { "str": "zandcrawler" },
-    "description": "A calloused and misshapen form that seems to have adapted to the harsh, dry environment.",
-    "speed": 90,
-    "death_drops": "mon_zombie_swimmer_death_drops",
-    "extend": { "flags": [ "CAN_DIG" ] }
   }
 ]