CF 3.4 | simple ruby Cat class

cat.rb

class Cat
	attr_reader :color, :breed, :name
	# There is no need for a separate attr_writer and separate attr_reader for name because attr_accessor can combine those methods into one (DRY)
	# attr_writer :name
	attr_accessor :name

	def initialize(color, breed)
		@color = color # Instances variables are available to other methods inside of this class. This is unlike local variables, which only exist inside the method they're called in.
		@breed = breed
		@hungry = true
	end

	def feed(food)
		puts "Mmmm, " + food + "!"
		@hungry = false
	end

	def hungry?
		if @hungry
			puts "I\'m hungry!"
		else
			puts "I\'m full!"
		end
		@hungry
	end

	def speak
		puts "Meow!"
	end
end

kitty = Cat.new("grey", "Persian")

puts "Let's inspect our new cat:"
puts kitty.inspect
puts "What class does our new cat belong to?"
puts kitty.class
puts "Is our new cat an object?"
puts kitty.is_a?(Object)
puts "What color is our cat?"
puts kitty.color # if the class has not attr_reader, this returns and error because 'color' is an undefined method for class Cat. When an attr_reader is added to the class, the error goes away.
# kitty.color = "orange" # this will return an error if the Cat class doesn't have an attr_writer
puts "Let's give our new cat a name"
kitty.name = "Betsy"
puts kitty.name

puts "Is our cat hungry now?"
kitty.hungry?
puts "Let's fed our cat"
kitty.feed("tuna")
puts "Is our cat hungry now?"
kitty.hungry?

puts "Our cat can make noise"
kitty.speak