What's a better way to traverse an array while iterating through another array? For example, if I have two arrays like the following:

names = [ "Rover", "Fido", "Lassie", "Calypso"]
breeds = [ "Terrier", "Lhasa Apso", "Collie", "Bulldog"]

Assuming the arrays correspond with one another - that is, Rover is a Terrier, Fido is a Lhasa Apso, etc. - I'd like to create a dog class, and a new dog object for each item:

class Dog
  attr_reader :name, :breed

  def initialize(name, breed)
    @name = name
    @breed = breed
  end
end

I can iterate through names and breeds with the following:

index = 0

names.each do |name|
  dog = Dog.new("#{name}", "#{breeds[index]}")
  index = index.next
end

However, I get the feeling that using the index variable is the wrong way to go about it. What would be a better way?