Here is some trivia about A Penguin's Memories
- The Japanese version of the film wasn't screened in the United States until 2000, when MGM gave the Japanese version a subtitled limited release as part of a reissue of the film, this version was later included on the 2002 DVD release, however, it wasn't included on Kino Lorber's Blu-Ray, due to licensing problems.
- MGM had plans to release the film on Blu-Ray for some time, with the initial announcement for a Blu-Ray coming in 2011, however, a Blu-Ray of the movie never materialized until 2017.
- Because of the memes the film had sparked in 2018, it's been erroneously called "Club Penguin in the Vietnam War".
- The initial tagline for the film was going to be "PTSD can destroy us, but it can bond us", however, the tagline was later changed to "This ain't no traditional funny animal story..." at the recommendation of Kirk Kerkorian, mainly to avoid any controversy surrounding the movie's tone.
- Some of the movie's characters had different voices considered before their roles were cast
- Charlie Sheen, Tom Hulce, Garry Chalk, Dom DeLuise (who later voiced Paul and some additional voices), and Martin Sheen were all considered for voicing Mike
- William Windom, John Cleese, Ed Asner, Charles Nelson Reilly, and Michael Keaton were considered for voicing Bob Adams
- Kylie Minogue and Pat Benatar were considered for voicing Jill
- JK Simmons was considered for voicing Al
- The 2002 DVD release keeps the United Artists "Swoosh" logo, however, the MGM/UA Communications Company logo is cut off and replaced with the 1986 MGM logo. The Kino Lorber DVD/Blu-Ray restores the MGM/UA Communications Company logo with the 2012 MGM logo preceding the logo.
- The trailer for the film featured the Electric Light Orchestra song "Twilight", and the TV spots contained both that song and an English dubbed version of the original film's credits song "Boy No Kisetsu".
- The film was indirectly referenced in Carl Andy's The Mamiya House as Emily Harold wears a Suntory Penguin shirt throughout the film, this was done as a returning favor to the film referencing 1975's Toby, which was coincidentally enough also released by United Artists.
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