Cows and villagers can go into attack state and become non-functional

mods/ENTITIES/mobs_mc/cow+mooshroom.lua

@@ -6,6 +6,7 @@ local cow_def = {
 	description = S("Cow"),
 	type = "animal",
 	spawn_class = "passive",
+	passive = true,
 	hp_min = 10,
 	hp_max = 10,
 	xp_min = 1,

mods/ENTITIES/mobs_mc/villager.lua

@@ -1576,6 +1576,7 @@ mcl_mobs:register_mob("mobs_mc:villager", {
 	description = S("Villager"),
 	type = "npc",
 	spawn_class = "passive",
+	passive = true,
 	hp_min = 20,
 	hp_max = 20,
 	head_swivel = "head.control",