diff --git a/GainStation13/code/mechanics/fatness.dm b/GainStation13/code/mechanics/fatness.dm
index d888dfd936..02a0190c15 100644
--- a/GainStation13/code/mechanics/fatness.dm
+++ b/GainStation13/code/mechanics/fatness.dm
@@ -135,6 +135,10 @@ GLOBAL_LIST_INIT(uncapped_resize_areas, list(/area/command/bridge, /area/mainten
 			if(!client?.prefs?.weight_gain_atmos)
 				return FALSE
 
+		if(TRANSFORMATION)
+			if(!client?.prefs?.transformation)
+				return FALSE
+
 		if(FATTENING_TYPE_WEIGHT_LOSS)
 			if(HAS_TRAIT(src, TRAIT_WEIGHT_LOSS_IMMUNE))
 				return FALSE
diff --git a/GainStation13/code/modules/client/preferences/preferences.dm b/GainStation13/code/modules/client/preferences/preferences.dm
index d8ce7cf670..bb76c9cc42 100644
--- a/GainStation13/code/modules/client/preferences/preferences.dm
+++ b/GainStation13/code/modules/client/preferences/preferences.dm
@@ -17,6 +17,8 @@
 	var/weight_gain_nanites = FALSE
 	//Weight gain from atmos gasses
 	var/weight_gain_atmos = FALSE
+	///content related to transformation
+	var/transformation = FALSE
 	///Blueberry Inflation
 	var/blueberry_inflation = FALSE
 	///Extreme weight gain
diff --git a/GainStation13/code/modules/mob/living/carbon/human/species_types/mootant.dm b/GainStation13/code/modules/mob/living/carbon/human/species_types/mootant.dm
index 08d9241d20..47d90d81ec 100644
--- a/GainStation13/code/modules/mob/living/carbon/human/species_types/mootant.dm
+++ b/GainStation13/code/modules/mob/living/carbon/human/species_types/mootant.dm
@@ -115,17 +115,21 @@
 
 /datum/reagent/mutationtoxin/mootant/on_mob_life(mob/living/carbon/human/H)
 	..()
-	if(!istype(H))
+	if(H?.client?.prefs?.transformation)
+		to_chat(H, "<span class='warning'><b>You crumple in agony as your flesh wildly morphs into a new bovine form!</b></span>")
+		H.visible_message("<b>[H]</b> falls to the ground and screams as [H.p_their()] their body turns more bovine!")
+		H.DefaultCombatKnockdown(60)
+		H.adjust_fatness(400, FATTENING_TYPE_CHEM)
+		H.dna.features["breasts_producing"] = TRUE
+		H.dna.features["mam_ears"] = "Mootant ALT (Tertiary)"
+		H.dna.features["mam_snouts"] = "Mootant ALT (Tertiary)"
+		H.dna.features["mam_tail"] = "Mootant"
+		H.reagents.add_reagent(/datum/reagent/fermi/breast_enlarger, 40) //instead of adding breasts as a mutant organ, let's just make them grow some
+		H.update_body()
+		addtimer(CALLBACK(src, PROC_REF(mutate), H), 30)
 		return
-	to_chat(H, "<span class='warning'><b>You crumple in agony as your flesh wildly morphs into a new bovine form!</b></span>")
-	H.visible_message("<b>[H]</b> falls to the ground and screams as [H.p_their()] their body turns more bovine!")
-	H.DefaultCombatKnockdown(60)
-	H.adjust_fatness(400, FATTENING_TYPE_CHEM)
-	H.dna.features["breasts_producing"] = TRUE
-	H.dna.features["mam_ears"] = "Mootant ALT (Tertiary)"
-	H.dna.features["mam_snouts"] = "Mootant ALT (Tertiary)"
-	H.dna.features["mam_tail"] = "Mootant"
-	H.reagents.add_reagent(/datum/reagent/fermi/breast_enlarger, 40) //instead of adding breasts as a mutant organ, let's just make them grow some
-	H.update_body()
-	addtimer(CALLBACK(src, PROC_REF(mutate), H), 30)
-	return
+
+	if(!H?.client?.prefs?.transformation)
+		to_chat(H, span_warning("It seems like [H] resisted the effects of the mutation toxin."))
+		return FALSE
+
diff --git a/code/__DEFINES/misc.dm b/code/__DEFINES/misc.dm
index d914f07c15..4522b6cdea 100644
--- a/code/__DEFINES/misc.dm
+++ b/code/__DEFINES/misc.dm
@@ -597,5 +597,6 @@ GLOBAL_LIST_INIT(pda_reskins, list(
 #define FATTENING_TYPE_RADIATIONS "radiations"
 #define FATTENING_TYPE_WEIGHT_LOSS "weight_loss"
 #define FATTENING_TYPE_ALMIGHTY "almighty" //This ignores prefs, please only use this for smites and other admin controlled instances.
+#define TRANSFORMATION "transformation"
 
 #define FATNESS_TO_WEIGHT_RATIO 0.25
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 9308e8ab23..46b0f9e257 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -1426,6 +1426,7 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "<b>Show that you want to be confronted:</b><a href='?_src_=prefs;preference=trouble_seeker'>[trouble_seeker == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 					dat += "<b>Bot Feeding:</b><a href='?_src_=prefs;preference=bot_feeding'>[bot_feeding == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 					dat += "<b>Blueberry Inflation:</b><a href='?_src_=prefs;preference=blueberry_inflation'>[blueberry_inflation == TRUE ? "Enabled" : "Disabled"]</a><BR>"
+
 					dat += "<b>Hear Burping Noises:</b> <a href='?_src_=prefs;preference=burping_noises'>[(cit_toggles & BURPING_NOISES) ? "Allowed" : "Disallowed"]</a><br>"
 					dat += "<b>Hear Farting Noises:</b> <a href='?_src_=prefs;preference=farting_noises'>[(cit_toggles & FARTING_NOISES) ? "Allowed" : "Disallowed"]</a><br>"
 
@@ -1455,6 +1456,8 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 					dat += "<br></br>"
 					dat += "<b>Object TF:</b><a href='?_src_=prefs;preference=object_tf'>[object_tf == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 					dat += "<br></br>"
+					dat += "<b>Transformation:</b><a href='?_src_=prefs;preference=transformation'>[transformation == TRUE ? "Enabled" : "Disabled"]</a><BR>"
+					dat += "<br></br>"
 					dat += "<b>Extreme Weight Gain (Sprite Size scales with weight):</b><a href='?_src_=prefs;preference=weight_gain_extreme'>[weight_gain_extreme == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 					dat += "<b>Persistent Fat (endround/cryo weight becomes your new start weight):</b><a href='?_src_=prefs;preference=weight_gain_persistent'>[weight_gain_persistent == TRUE ? "Enabled" : "Disabled"]</a><BR>"
 					dat += "<b>Permanent Weight (hard to remove and persistent weight):</b><a href='?_src_=prefs;preference=weight_gain_permanent'>[weight_gain_permanent == TRUE ? "Enabled" : "Disabled"]</a><BR>"
@@ -3575,6 +3578,8 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 
 				if("object_tf")
 					object_tf = !object_tf
+				if("transformation")
+					transformation = !transformation
 
 				if("blueberry_inflation")
 					blueberry_inflation = !blueberry_inflation
diff --git a/code/modules/client/preferences_savefile.dm b/code/modules/client/preferences_savefile.dm
index 400638ebef..1b40980735 100644
--- a/code/modules/client/preferences_savefile.dm
+++ b/code/modules/client/preferences_savefile.dm
@@ -969,6 +969,7 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 	S["extreme_fatness_vulnerable"] >> extreme_fatness_vulnerable
 	S["object_tf"] >> object_tf
 	S["blueberry_inflation"] >> blueberry_inflation
+	S["transformation"] >> transformation
 	S["feature_breasts_fluid"]			>> features["breasts_fluid"]
 	S["feature_balls_fluid"]			>> features["balls_fluid"]
 	S["alt_titles_preferences"] 		>> alt_titles_preferences
@@ -1271,6 +1272,7 @@ SAVEFILE UPDATING/VERSIONING - 'Simplified', or rather, more coder-friendly ~Car
 	WRITE_FILE(S["extreme_fatness_vulnerable"], extreme_fatness_vulnerable)
 	WRITE_FILE(S["object_tf"], object_tf)
 	WRITE_FILE(S["blueberry_inflation"], blueberry_inflation)
+	WRITE_FILE(S["transformation"], transformation)
 	WRITE_FILE(S["feature_breasts_fluid"], features["breasts_fluid"])
 
 	// records