But Saturn was a bit of an escape artist.
When the Battle of Berlin began in 1943, thousands of bombs were dropped over the city.
On the night of 22-23 November, the Tiergarten district in Berlin was decimated, which was where the city's zoo was located.
Saturn made his getaway that fateful night.
By the end of the war, less than 100 of the 3500 animals in the Berlin Zoo had survived thanks to Allied bombing campaigns.
After his escape, the Houdini-like alligator disappeared from history records for the next three years.
When Allied troops finally reached Berlin in 1945, they found Saturn in the city. British soldiers gifted him to the Russians, and he has been in the Moscow Zoo ever since.
Saturn has been hailed as "Surely one of the great 20th century alligator" to have ever lived.
Nazi dictator Hitler was known to have extensive and exotic collections, and it was rumoured that Saturn was his private pet.
"Moscow Zoo has had the honour of keeping Saturn for 74 years," the zoo said in a statement.
"For us Saturn was an entire era, and that's without the slightest exaggeration … He saw many of us when we were children. We hope that we did not disappoint him."
The zoo reported that Saturn knew his keepers, loved being massaged with a brush – and was able to crack steel feeding tongs and bits of concrete with his teeth if irritated.
Mississippi alligators usually live to 30-50 years in the wild, it added.
