Vampire species for halloween

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -24,9 +24,9 @@
 			else //ingest, patch or inject
 				M.ForceContractDisease(D)
 
-	if(method == INJECT && iscarbon(M))
+	if(iscarbon(M))
 		var/mob/living/carbon/C = M
-		if(C.get_blood_id() == "blood")
+		if(C.get_blood_id() == "blood" && (method == INJECT || (method == INGEST && C.dna && C.dna.species && (DRINKSBLOOD in C.dna.species.species_traits))))
 			if(!data || !(data["blood_type"] in get_safe_blood(C.dna.blood_type)))
 				C.reagents.add_reagent("toxin", reac_volume * 0.5)
 			else

code/modules/reagents/reagent_containers/blood_pack.dm

@@ -65,6 +65,9 @@
 /obj/item/reagent_containers/blood/lizard
 	blood_type = "L"
 
+/obj/item/reagent_containers/blood/universal
+	blood_type = "U"
+
 /obj/item/reagent_containers/blood/empty
 	name = "blood pack"
 	icon_state = "empty"