diff --git a/code/modules/mob/living/simple_animal/friendly/cat.dm b/code/modules/mob/living/simple_animal/friendly/cat.dm
index e0a615edee1..57cf403e33b 100644
--- a/code/modules/mob/living/simple_animal/friendly/cat.dm
+++ b/code/modules/mob/living/simple_animal/friendly/cat.dm
@@ -71,7 +71,7 @@
 
 	if(isnull(family))
 		family = list()
-	log_debug("Persistent data for [src] loaded (family: [list2params(family)])")
+	log_debug("Persistent data for [src] loaded (family: [family ? list2params(family) : "None"])")
 
 /mob/living/simple_animal/pet/cat/Runtime/proc/write_memory(dead)
 	var/savefile/S = new /savefile("data/npc_saves/Runtime.sav")
@@ -85,7 +85,7 @@
 			else
 				family[C.type] = 1
 	S["family"]				<< family
-	log_debug("Persistent data for [src] saved (family: [list2params(family)])")
+	log_debug("Persistent data for [src] saved (family: [family ? list2params(family) : "None"])")
 
 /mob/living/simple_animal/pet/cat/Runtime/proc/deploy_the_cats()
 	for(var/cat_type in family)
diff --git a/code/modules/mob/living/simple_animal/friendly/dog.dm b/code/modules/mob/living/simple_animal/friendly/dog.dm
index 8543738fbbe..597ab3aeb9e 100644
--- a/code/modules/mob/living/simple_animal/friendly/dog.dm
+++ b/code/modules/mob/living/simple_animal/friendly/dog.dm
@@ -476,7 +476,7 @@
 		record_age = 1
 	if(saved_head)
 		place_on_head(new saved_head)
-	log_debug("Persistent data for [src] loaded (age: [age] | record_age: [record_age] | saved_head: [saved_head])")
+	log_debug("Persistent data for [src] loaded (age: [age] | record_age: [record_age] | saved_head: [saved_head ? saved_head : "None"])")
 
 /mob/living/simple_animal/pet/dog/corgi/Ian/proc/write_memory(dead)
 	var/json_file = file("data/npc_saves/Ian.json")
@@ -497,7 +497,7 @@
 		file_data["saved_head"] = null
 	fdel(json_file)
 	WRITE_FILE(json_file, json_encode(file_data))
-	log_debug("Persistent data for [src] saved (age: [age] | record_age: [record_age] | saved_head: [saved_head])")
+	log_debug("Persistent data for [src] saved (age: [age] | record_age: [record_age] | saved_head: [saved_head ? saved_head : "None"])")
 
 /mob/living/simple_animal/pet/dog/corgi/Ian/handle_automated_movement()
 	. = ..()