diff --git a/animal.rb b/animal.rb
new file mode 100644
index 0000000..356f6e5
--- /dev/null
+++ b/animal.rb
@@ -0,0 +1,13 @@
+#! /usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+print "犬または猫を入力してください\n"
+animal = gets.chomp
+
+if animal == "犬"
+print "ワオーン\n"
+elsif animal == "猫"
+print "ニャーオ\n"
+else
+print "犬または猫を入力してください\n"
+end