 An outraged Granny makes both the dog and cat spit up their respective prey and, in her anger, she having had enough of their carnivorous pursuits, insists there will be peace in the house once and for all.The cartoon ends with Granny (playing pipe organ) and Tweety (the only one of the animals who has behaved) singing a variation of the Christmas carol "Hark The Herald Angels Sing".On Tweety's right and left are Sylvester and Hector, both with giant ""Do Not Open Till Xmas"" stamps taped all over their mouths.