simple ruby file instance variables and parameter

gistfile1.txt

class Animal

	attr_accessor :name, :what_animal, :breed

	def report(personality)
		puts "#{@name} is a #{@what_animal}."
		puts "#{@name} has a #{personality.breed} personality."
	
	  #so why am I setting my variable = parameter?
	  #My thesis is that I do this when I deal with only one instance...
	  #am I right?
		@breed = personality
	end
end