diff --git a/docs/src/cows.md b/docs/src/cows.md
index e1bf878..e1329eb 100644
--- a/docs/src/cows.md
+++ b/docs/src/cows.md
@@ -8,6 +8,7 @@ Examples of all the cowfiles available.
 Cowsay.default
 Cowsay.cower
 Cowsay.udder
+Cowsay.vader
 ```
 
 ## Mascots
diff --git a/src/cows/vader.cow.jl b/src/cows/vader.cow.jl
index 33c36f2..e1e8abf 100644
--- a/src/cows/vader.cow.jl
+++ b/src/cows/vader.cow.jl
@@ -1,6 +1,25 @@
-##
-## Cowth Vader, from geordan@csua.berkeley.edu
-##
+"""
+    function vader()
+
+Cowth Vader, from geordan@csua.berkeley.edu
+
+# Example
+
+```jldoctest
+julia> cowsay("Luke, I am your father!", cow=Cowsay.vader)
+ _________________________
+< Luke, I am your father! >
+ -------------------------
+        \\    ,-^-.
+         \\   !oYo!
+          \\ /./=\\.\\______
+               ##        )\\/\\
+                ||-----w||
+                ||      ||
+
+               Cowth Vader
+```
+"""
 function vader(;eyes="oo", tongue="  ", thoughts="\\")
 the_cow =
 """