My dog Liebe, who is less than 30 centimeters high,   thinks that she is as big as a rottwieler! She nips at HUGE   dogs heels, and then gats a nip back! But she is very
  confident, and cannot be made to believe that she is not 3 times her size! One day, one day, she really will meet  her match. And then she will act like a small dog!