diff --git a/API.md b/API.md
index ec2bcc645..fd88aa343 100644
--- a/API.md
+++ b/API.md
@@ -91,6 +91,7 @@ These groups are used mostly for informational purposes
    * `container=3`: Same as `container=2`, but shulker boxes can not be inserted
    * `container=4`: Furnace-like, has lists `"src"`, `"fuel"` and `"dst"`
    * `container=1`: Other/unspecified container type
+* `spawn_egg=1`: Spawn egg
 
 * `weapon=1`: Item is primarily (!) a weapon
 * `tool=1`: Item is primarily (!) a tool
diff --git a/mods/mobs/api.lua b/mods/mobs/api.lua
index dc16cdb8f..67f60bc46 100644
--- a/mods/mobs/api.lua
+++ b/mods/mobs/api.lua
@@ -2805,6 +2805,7 @@ function mobs:register_egg(mob, desc, background, addegg, no_creative)
 	if creative and no_creative == true then
 		grp = {not_in_creative_inventory = 1}
 	end
+	grp.spawn_egg = 1
 
 	local invimg = background