Charizard, sees his opportunity at last and strikes,

Remembering all of the years of torment he had suffered by that infernal dog had caused him he began to swing his tail for great justice

And thus, strike

after strike

Charizard mercilessly ravaged the bird and dog,
"And don't expect any help from your friends," charizard said, "there's a reason why the Ice Climbers didn't return this round"
"You bastard!" The zapper shouted but he was unable to do anything because he had been unplugged...
"Mercy" the dog begged,
But charizard just laughed before unleashimg another blast of fire, frying the dogs internal organs

And thus was the end of the duck hunt dog.
With that charizard woke up from it's nap, "WTF WAS THAT" charizard exclaimed