diff --git a/index.js b/index.js
index 695b9e1..f3d053f 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,42 @@
 const app = "I don't do much."
+
+var kitens = ["Milo", "Otis", "Garfield"]
+
+function destructivelyAppendKitten(name){
+  kittens.push(name)
+  return kittens
+}
+
+function destructivelyPrependKitten(name){
+  kittens.unshift(name)
+  return kittens
+}
+
+function destructivelyRemoveLastKitten(){
+  kittens.pop()
+  return kittens
+}
+
+function destructivelyRemoveFirstKitten(){
+  kittens.shift()
+  return kittens
+}
+
+function appendKitten(name){
+  return [...kitens, name]
+}
+
+function prependKitten(name){
+  return [name, ...kittens]
+}
+
+function removeFirstKitten(){
+  var cats = kittens.slice(1)
+  return cats
+}
+
+function removeLastKitten(){
+  var newcats = kittens.slice(0,kittens.length -1)
+  return newcats
+}
+