Genius.  A giant tom-cat.  A dragon.  The most dangerous creature in the world.  With one word, we see the absolute confidence of the dragon, the completely athletic competence and grace.  With the same word, the father takes a tiny bit of the sting of fear out of the tale.  Yet we hear the rumble of the furnace.

• 12.011 mixed with a rumble as of a gigantic tom-cat purring.