The oldest cat ever was Creme Puff, who was born on August 3, 1967 and lived until August 6, 2005—38 years and 3 days in total. ↑ Tributes pour in after oldest polar bear dies in Winnipeg from CBC.ca; published November 18, 2008; retrieved September 27, 2014 ↑ "Oldest black rhinoceros in North America turns 45", by Janie Har, Associated Press ↑ "World's oldest mouse reaches milestone birthday". www.ur.umich.edu. Retrieved 2016-11-02. ↑ Locke, Robert (2006). "Longest-lived mammals offer clues to better aging in humans".