diff --git a/code/__defines/mobs.dm b/code/__defines/mobs.dm
index 3efba64e5ae..d0428cdb6bc 100644
--- a/code/__defines/mobs.dm
+++ b/code/__defines/mobs.dm
@@ -117,6 +117,11 @@
 #define MOB_TINY 		5
 #define MOB_MINISCULE	1
 
+// Gluttony levels. 
+#define GLUT_TINY 1       // Eat anything tiny and smaller
+#define GLUT_SMALLER 2    // Eat anything smaller than we are
+#define GLUT_ANYTHING 3   // Eat anything, ever
+
 #define TINT_NONE 0
 #define TINT_MODERATE 1
 #define TINT_HEAVY 2
diff --git a/code/modules/mob/living/carbon/human/species/outsider/vox.dm b/code/modules/mob/living/carbon/human/species/outsider/vox.dm
index fa7dda8f576..3e919def334 100644
--- a/code/modules/mob/living/carbon/human/species/outsider/vox.dm
+++ b/code/modules/mob/living/carbon/human/species/outsider/vox.dm
@@ -26,7 +26,7 @@
 	cold_level_3 = 0
 
 	eyes = "vox_eyes_s"
-	gluttonous = 2
+	gluttonous = GLUT_SMALLER
 
 	breath_type = "nitrogen"
 	poison_type = "oxygen"
diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index 598e19aace8..a0f033fe90f 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -121,7 +121,7 @@
 	var/primitive_form            // Lesser form, if any (ie. monkey for humans)
 	var/greater_form              // Greater form, if any, ie. human for monkeys.
 	var/holder_type
-	var/gluttonous                // Can eat some mobs. 1 = eat MOB_TINY and below, 2 = eat anything we're larger than, 3 = eat anything
+	var/gluttonous                // Can eat some mobs. Values can be GLUT_TINY, GLUT_SMALLER, GLUT_ANYTHING.
 	var/rarity_value = 1          // Relative rarity/collector value for this species.
 	                              // Determines the organs that the species spawns with and
 	var/list/has_organ = list(    // which required-organ checks are conducted.
diff --git a/code/modules/mob/living/carbon/human/species/station/resomi.dm b/code/modules/mob/living/carbon/human/species/station/resomi.dm
index 238f022aabb..9cdf3b82e53 100644
--- a/code/modules/mob/living/carbon/human/species/station/resomi.dm
+++ b/code/modules/mob/living/carbon/human/species/station/resomi.dm
@@ -30,7 +30,7 @@
 	mob_size = MOB_SMALL
 	holder_type = /obj/item/weapon/holder/human
 	short_sighted = 1
-	gluttonous = 1
+	gluttonous = GLUT_TINY
 
 	spawn_flags = CAN_JOIN | IS_WHITELISTED
 	appearance_flags = HAS_HAIR_COLOR | HAS_SKIN_COLOR | HAS_EYE_COLOR
diff --git a/code/modules/mob/living/carbon/human/species/station/station.dm b/code/modules/mob/living/carbon/human/species/station/station.dm
index a4d9ce10a12..ec8fe65ccb9 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -28,7 +28,7 @@
 	unarmed_types = list(/datum/unarmed_attack/stomp, /datum/unarmed_attack/kick, /datum/unarmed_attack/claws, /datum/unarmed_attack/bite/sharp)
 	primitive_form = "Stok"
 	darksight = 3
-	gluttonous = 1
+	gluttonous = GLUT_TINY
 	slowdown = 0.5
 	brute_mod = 0.8
 	num_alternate_languages = 2
@@ -87,7 +87,7 @@
 	slowdown = -0.5
 	brute_mod = 1.15
 	burn_mod =  1.15
-	gluttonous = 1
+	gluttonous = GLUT_TINY
 	num_alternate_languages = 2
 	secondary_langs = list("Siik'tajr")
 	name_language = "Siik'tajr"
diff --git a/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm b/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
index 3c89ed183b0..22f583e1063 100644
--- a/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
+++ b/code/modules/mob/living/carbon/human/species/xenomorphs/alien_species.dm
@@ -11,7 +11,7 @@
 
 	has_fine_manipulation = 0
 	siemens_coefficient = 0
-	gluttonous = 3
+	gluttonous = GLUT_ANYTHING
 
 	eyes = "blank_eyes"
 
diff --git a/code/modules/mob/mob_grab_specials.dm b/code/modules/mob/mob_grab_specials.dm
index 860d214b141..1109e78129b 100644
--- a/code/modules/mob/mob_grab_specials.dm
+++ b/code/modules/mob/mob_grab_specials.dm
@@ -147,11 +147,11 @@
 	else
 		var/mob/living/carbon/human/H = user
 		if(istype(H) && H.species.gluttonous && (iscarbon(target) || isanimal(target)))
-			if(H.species.gluttonous == 1 && (target.mob_size <= MOB_TINY) && !ishuman(target)) // Anything MOB_TINY or smaller
+			if(H.species.gluttonous == GLUT_TINY && (target.mob_size <= MOB_TINY) && !ishuman(target)) // Anything MOB_TINY or smaller
 				can_eat = 1
-			else if(H.species.gluttonous == 2 && (H.mob_size > target.mob_size)) // Anything we're larger than
+			else if(H.species.gluttonous == GLUT_SMALLER && (H.mob_size > target.mob_size)) // Anything we're larger than
 				can_eat = 1
-			else if(H.species.gluttonous == 3) // Eat anything ever
+			else if(H.species.gluttonous == GLUT_ANYTHING) // Eat anything ever
 				can_eat = 2
 
 	if(can_eat)