diff --git a/code/modules/mob/living/simple_animal/friendly/mouse.dm b/code/modules/mob/living/simple_animal/friendly/mouse.dm
index 2b776671fe..25cb03331d 100644
--- a/code/modules/mob/living/simple_animal/friendly/mouse.dm
+++ b/code/modules/mob/living/simple_animal/friendly/mouse.dm
@@ -54,6 +54,14 @@
 		else if(prob(5))
 			audible_emote("snuffles.")
 
+/mob/living/simple_animal/mouse/lay_down() //Simply turns sprite into sleeping and back upon using "Rest".
+	set name = "Rest"
+	set category = "IC"
+
+	resting = !resting
+	icon_state = resting ? "mouse_[body_color]_sleep" : "mouse_[body_color]"
+	src << "<span class='notice'>You are now [resting ? "resting" : "getting up"]</span>"
+
 /mob/living/simple_animal/mouse/New()
 	..()