Fred the Raccoon - Date of birth and death unknown, but he gained fame in 2018 when he was seen climbing a skyscraper in Minnesota.

Harambe the Gorilla - 1999–2016.

Mr. Goxx the Crypto-Trading Hamster - 2021–2021.

Cecil the Lion - c. 2002–2015.

Tilikum the Orca - c. 1981–2017.

Lonesome George the Tortoise - c. 1910–2012.

Boo the Pomeranian - 2006–2019.

Koko the Gorilla - 1971–2018.

Grumpy Cat (Tardar Sauce) - 2012–2019.

Paul the Octopus - 2008–2010.

Gus the Polar Bear - 1985–2013.

Lady Wonder the Psychic Horse - 1924–1957.

Scarface the Bear - 1979–2015.

Owney the Postal Dog - 1888–1897.

Ralph the Porcupine - Date of birth and death unknown; he gained attention in 2021.

April the Giraffe - 2002–2021.

Freya the Walrus - c. 2019–2022.

George the Penguin - Date of birth unknown; became famous in 2020, released shortly thereafter.

Lazarus the Dog - Date of birth unknown; he was rescued in 2020.

Peanut the Squirrel