Fleur Delacour has always been very good with animals and creatures, and they love her for it. Any man who wishes to date her must pass a test that is very important to her. This was why her relationship with Bill didn't work out, in the end.
And so Harry is determined to pass the test. He must gain the acceptance and affection of Fleur's devoted canine companion. He does his best to find out the best method to give scratches behind the ear to all three spotted heads of Fleur's puppy.