Portal:Animation/Anniversaries/December/December 14

1957 – The Ruff and Reddy Show, an American animated television series begins airing on NBC
1987 – Teenage Mutant Ninja Turtles, an American animated television series begins airing in syndication
1991 – Where's Wally?: The Animated Series, an American animated television series finishes airing on CBS
1996 – Mortal Kombat: Defenders of the Realm, an American animated television series based on Mortal Kombat finishes airing on USA Network
2002 – Clerks: The Animated Series, an American animated sitcom television series finishes airing on Comedy Central
2023 – DreamWorks Dragons: The Nine Realms, an American animated television series finishes airing on Hulu