diff --git a/data/mods/TEST_DATA/monsters.json b/data/mods/TEST_DATA/monsters.json
index 85b0c23ea9806..62a1e84f41397 100644
--- a/data/mods/TEST_DATA/monsters.json
+++ b/data/mods/TEST_DATA/monsters.json
@@ -427,5 +427,50 @@
     "dodge": 2,
     "bleed_rate": 60,
     "armor": { "bash": 8, "cut": 10, "electric": 1 }
+  },
+  {
+    "id": "mon_dummy_reproducer_eggs",
+    "type": "MONSTER",
+    "name": { "str": "debug rerpoducer (eggs)", "str_pl": "debug rerpoducers (eggs)" },
+    "description": "Monster used to test `baby_type` work.",
+    "default_faction": "",
+    "volume": "100 ml",
+    "weight": "100 g",
+    "hp": 5,
+    "speed": 100,
+    "color": "white",
+    "symbol": "1",
+    "reproduction": { "baby_type": { "baby_egg": "egg_chicken" }, "baby_count": 1, "baby_timer": 1 },
+    "baby_flags": [ "SPRING", "SUMMER", "AUTUMN", "WINTER" ]
+  },
+  {
+    "id": "mon_dummy_reproducer_egg_group",
+    "copy-from": "mon_dummy_reproducer_eggs",
+    "type": "MONSTER",
+    "name": { "str": "debug rerpoducer (egg group)", "str_pl": "debug rerpoducers (egg group)" },
+    "color": "green",
+    "symbol": "2",
+    "reproduction": { "baby_type": { "baby_egg_group": "book_gunmags" }, "baby_count": 1, "baby_timer": 1 },
+    "baby_flags": [ "SPRING", "SUMMER", "AUTUMN", "WINTER" ]
+  },
+  {
+    "id": "mon_dummy_reproducer_mon",
+    "copy-from": "mon_dummy_reproducer_eggs",
+    "type": "MONSTER",
+    "name": { "str": "debug rerpoducer (monster)", "str_pl": "debug rerpoducers (monster)" },
+    "color": "cyan",
+    "symbol": "3",
+    "reproduction": { "baby_type": { "baby_monster": "mon_dog_bull" }, "baby_count": 1, "baby_timer": 1 },
+    "baby_flags": [ "SPRING", "SUMMER", "AUTUMN", "WINTER" ]
+  },
+  {
+    "id": "mon_dummy_reproducer_mon_group",
+    "copy-from": "mon_dummy_reproducer_eggs",
+    "type": "MONSTER",
+    "name": { "str": "debug rerpoducer (mongroup)", "str_pl": "debug rerpoducers (mongroup)" },
+    "color": "yellow",
+    "symbol": "4",
+    "reproduction": { "baby_type": { "baby_monster_group": "GROUP_PET_CATS" }, "baby_count": 1, "baby_timer": 1 },
+    "baby_flags": [ "SPRING", "SUMMER", "AUTUMN", "WINTER" ]
   }
 ]
diff --git a/tests/monster_test.cpp b/tests/monster_test.cpp
index 38256742ff6c5..bdd1d1bb7d139 100644
--- a/tests/monster_test.cpp
+++ b/tests/monster_test.cpp
@@ -14,6 +14,7 @@
 #include "cata_scope_helpers.h"
 #include "character.h"
 #include "filesystem.h"
+#include "creature_tracker.h"
 #include "game.h"
 #include "game_constants.h"
 #include "line.h"
@@ -414,3 +415,91 @@ TEST_CASE( "limit_mod_size_bonus", "[monster]" )
     test_monster2.mod_size_bonus( 3 );
     CHECK( test_monster2.get_size() == creature_size::huge );
 }
+
+TEST_CASE( "monsters_spawn_eggs", "[monster][reproduction]" )
+{
+    clear_map();
+    map &here = get_map();
+    tripoint loc = get_avatar().pos() + tripoint_east;
+    monster &test_monster = spawn_test_monster( "mon_dummy_reproducer_eggs", loc );
+    test_monster.set_baby_timer( calendar::turn - 1_days );
+    bool test_monster_spawns_eggs = false;
+    int amount_of_iteration = 0;
+    while( amount_of_iteration < 100 ) {
+        test_monster.try_reproduce();
+        if( here.has_items( loc ) ) {
+            test_monster_spawns_eggs = true;
+            break;
+        } else {
+            amount_of_iteration++;
+        }
+    }
+    CAPTURE( amount_of_iteration );
+    CHECK( test_monster_spawns_eggs );
+}
+
+TEST_CASE( "monsters_spawn_egg_itemgroups", "[monster][reproduction]" )
+{
+    clear_map();
+    map &here = get_map();
+    tripoint loc = get_avatar().pos() + tripoint_east;
+    monster &test_monster = spawn_test_monster( "mon_dummy_reproducer_egg_group", loc );
+    test_monster.set_baby_timer( calendar::turn - 1_days );
+    bool test_monster_spawns_egg_group = false;
+    int amount_of_iteration = 0;
+    while( amount_of_iteration < 100 ) {
+        test_monster.try_reproduce();
+        if( here.has_items( loc ) ) {
+            test_monster_spawns_egg_group = true;
+            break;
+        } else {
+            amount_of_iteration++;
+        }
+    }
+    CAPTURE( amount_of_iteration );
+    CHECK( test_monster_spawns_egg_group );
+}
+
+TEST_CASE( "monsters_spawn_babies", "[monster][reproduction]" )
+{
+    clear_map();
+    creature_tracker &creatures = get_creature_tracker();
+    tripoint loc = get_avatar().pos() + tripoint_east;
+    monster &test_monster = spawn_test_monster( "mon_dummy_reproducer_mon", loc );
+    test_monster.set_baby_timer( calendar::turn - 1_days );
+    bool test_monster_spawns_babies = false;
+    int amount_of_iteration = 0;
+    while( amount_of_iteration < 100 ) {
+        test_monster.try_reproduce();
+        if( creatures.get_monsters_list().size() > 1 ) {
+            test_monster_spawns_babies = true;
+            break;
+        } else {
+            amount_of_iteration++;
+        }
+    }
+    CAPTURE( amount_of_iteration );
+    CHECK( test_monster_spawns_babies );
+}
+
+TEST_CASE( "monsters_spawn_baby_groups", "[monster][reproduction]" )
+{
+    clear_map();
+    creature_tracker &creatures = get_creature_tracker();
+    tripoint loc = get_avatar().pos() + tripoint_east;
+    monster &test_monster = spawn_test_monster( "mon_dummy_reproducer_mon_group", loc );
+    test_monster.set_baby_timer( calendar::turn - 1_days );
+    bool test_monster_spawns_baby_mongroup = false;
+    int amount_of_iteration = 0;
+    while( amount_of_iteration < 100 ) {
+        test_monster.try_reproduce();
+        if( creatures.get_monsters_list().size() > 1 ) {
+            test_monster_spawns_baby_mongroup = true;
+            break;
+        } else {
+            amount_of_iteration++;
+        }
+    }
+    CAPTURE( amount_of_iteration );
+    CHECK( test_monster_spawns_baby_mongroup );
+}