Happiness is so called not by chance. She was an amazingly unlucky puppy. Who tucked up his paw? Who fell off the porch? Who fell into the pit? Who picked up the virus? Bad luck literally chased this baby. Of course, there was a certain amount of irony in this, when we called her Happiness.
Now the band of failures in the life of Happiness has ended. But she retained the image of the unhappy dog.