diff --git a/cow.lua b/cow.lua
index ed77836..76f3c0b 100644
--- a/cow.lua
+++ b/cow.lua
@@ -8,6 +8,7 @@ mobs:register_mob("mobs_animal:cow", {
 	type = "animal",
 	passive = false,
 	attack_type = "dogfight",
+	attack_npcs = false,
 	reach = 2,
 	damage = 4,
 	hp_min = 5,
diff --git a/kitten.lua b/kitten.lua
index 948add9..53d7b4d 100644
--- a/kitten.lua
+++ b/kitten.lua
@@ -7,7 +7,13 @@ local S = mobs.intllib
 mobs:register_mob("mobs_animal:kitten", {
 stepheight = 0.6,
 	type = "animal",
-	passive = true,
+specific_attack = {"mobs_animal:rat"},
+damage = 1,
+attack_type = "dogfight",
+attack_animals = true, -- so it can attack rat
+attack_players = false,
+reach = 1,
+	passive = false,
 	hp_min = 5,
 	hp_max = 10,
 	armor = 200,
diff --git a/warthog.lua b/warthog.lua
index d1f028d..92418e2 100644
--- a/warthog.lua
+++ b/warthog.lua
@@ -11,6 +11,7 @@ stepheight = 0.6,
 	attack_type = "dogfight",
 	group_attack = true,
 	owner_loyal = true,
+	attack_npcs = false,
 	reach = 2,
 	damage = 2,
 	hp_min = 5,