Ambiguous match of "its name is Fred":

puppy.feature

Feature: Puppies are very cute and everyone wants one
	In order to make everyone happy
	As a puppy class programmer
	I want to give everyone a cute virtual puppy

Scenario: The puppy is being pet
	Given we have a puppy
	  And its name is Fred
	When we pet the puppy
	Then the puppy wags its tail

Scenario: The puppy needs to go out
	Given we have a puppy
	  And its name is Bella
	When we ring the bell
	  And it wags its tail
	Then we must take it out
	  And then it will not pee on the floor

puppy.rb

class Puppy
  attr_accessor :name
  def initialize
  end

  def pet
    wag
  end

  protected
  def wag
    "the puppy wags its tail"
  end
end

puppy_steps.rb

Given /^we have a puppy$/ do
  @puppy = Puppy.new
end

Given /^its name is (\w+)$/ do |arg1|
  @puppy.name = arg1
  @puppy.name == arg1
end

When /^we pet the puppy$/ do
  @result = @puppy.pet
end

Then /^the puppy wags its tail$/ do
  @result.should eq "the puppy wags its tail"
end

Given /^its name is (\w+)$/ do |arg1|
  @puppy = Puppy.new
  @puppy.name = arg1
  @puppy.name.should eq arg1
end

When /^we ring the bell$/ do
  @result = @puppy.ring_the_bell
end

When /^it wags its tail$/ do
  pending # express the regexp above with the code you wish you had
end

Then /^we must take it out$/ do
  pending # express the regexp above with the code you wish you had
end

Then /^then it will not pee on the floor$/ do
  pending # express the regexp above with the code you wish you had
end