In Tears of a Tiger, why did Andy think his father likes to hunt?

Andy thinks his father likes to hunt because he's the proud owner of a hunting rifle. This is the very same rifle with which Andy will tragically take his own life.
There's something eerily appropriate about Andy's method of suicide. Long before his sad demise, he identified with the tiger after seeing the picture of the crying tiger drawn by Monty in class. As well as the tiger's sadness he identified with its being trapped in a cage from which it could never escape. It says something about Andy's hopeless condition that the only way he can be free is by killing himself. His dad's hunting rifle, which exists purely and solely to shoot animals, has now been used to kill this particular sad tiger.