Portal:Animation/Anniversaries/December/December 31
- Films released
- 1927 – Grid Ironed (United States)
- 1938 – The Mice Will Play (United States)
- 1939 – The Standard Parade (United States)
- 1943 – The Marry-Go-Round (United States)
- 1948 – Symphony in Spinach (United States)
- 1949 – A Ham in a Role (United States)
- 1955 – One Froggy Evening (United States)
- 1965 – The Dot and the Line (United States)
- 1992 – Invasion of the Bunny Snatchers (United States)
- Television series and specials
- 1974 – Mr. Men, a British animated television series based on the Mr. Men book series begins airing on BBC One
- 2003 – The Brak Show, an American animated television series finishes airing on Adult Swim