diff --git a/Gemfile.lock b/Gemfile.lock
index 277fb87..8b2355e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,6 +14,7 @@ GEM
 
 PLATFORMS
   ruby
+  x86-mingw32
 
 DEPENDENCIES
   rake
diff --git a/zoo.rb b/zoo.rb
index 8f5eea5..866f188 100644
--- a/zoo.rb
+++ b/zoo.rb
@@ -52,6 +52,20 @@ def full?
 	end
 end
 
+
+class Human
+	include Animal
+
+	def acceptable_food
+		[:bacon, :tacos]
+	end
+
+	def full?
+		@meals > 2
+	end
+end
+
+
 class Zookeeper
 	def feed(args={})
 		food = args.fetch(:food)
diff --git a/zoo_spec.rb b/zoo_spec.rb
index 4943c90..e06e468 100644
--- a/zoo_spec.rb
+++ b/zoo_spec.rb
@@ -61,6 +61,32 @@
 		lion.should be_full
 	end
 end
+describe Human do
+	it "should like bacon" do
+		Human.new.likes?(:bacon).should eq(true)
+	end
+
+	it "should like tacos" do
+		Human.new.likes?(:tacos).should eq(true)
+	end
+
+	it "should not like bamboo" do
+		Human.new.likes?(:bamboo).should eq(false)
+	end
+
+	it "should take 3 meals to be full" do
+		human = Human.new
+		human.eat(:bacon)
+		human.should_not be_full
+	end
+	it "should take 3 meals to be full" do
+		human = Human.new
+		3.times do
+			human.eat(:tacos)
+		end
+		human.should be_full
+	end
+end
 
 describe Zookeeper do
 	it "should be able to feed bamboo to the pandas" do
@@ -75,3 +101,4 @@
 		Zookeeper.new.feed(food: :zeebras, to: lion)
 	end
 end
+