Continuity: At Christmas Kerry got a dog. Where is that dog during the rest of the show? It has never been seen since that episode.
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Trivia
Although Amy Davidson played the younger daughter in the show (presumably 14 or 15), she was actually 23 when the show debuted in 2002. See more...
8 Simple Rules... For Dating My Teenage Daughter (2002) - 1 mistake in whole show
starring John Ritter, Katey Sagal (add more)
Across whole show
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