diff --git a/docs/src/cows.md b/docs/src/cows.md
index 9dd1844..e1bf878 100644
--- a/docs/src/cows.md
+++ b/docs/src/cows.md
@@ -24,4 +24,5 @@ Cowsay.bunny
 Cowsay.dragon_and_cow
 Cowsay.dragon
 Cowsay.elephant_in_snake
+Cowsay.vader_koala
 ```
diff --git a/src/cows/vader-koala.cow.jl b/src/cows/vader-koala.cow.jl
index 9dfd6e9..c6d7e41 100644
--- a/src/cows/vader-koala.cow.jl
+++ b/src/cows/vader-koala.cow.jl
@@ -1,6 +1,28 @@
-##
-## Another canonical koala?
-##
+"""
+    function vader_koala
+
+Another canonical koala?
+
+# Example
+
+```jldoctest
+julia> cowsay("Luke, you are my joey!", cow=Cowsay.vader_koala)
+ ________________________
+< Luke, you are my joey! >
+ ------------------------
+   \\
+    \\        .
+     .---.  //
+    Y|o o|Y//
+   /_(i=i)K/
+   ~()~*~()~
+    (_)-(_)
+
+     Darth
+     Vader
+     koala
+```
+"""
 function vader_koala(;eyes="oo", tongue="  ", thoughts="\\")
 the_cow =
 """