Cheddar was a key character on "Brooklyn Nine-Nine," and was known as Captain Holt's (Andre Braugher) "cute secret weapon," according to Deadline. He was the last-minute ring bearer at Jake (Andy Samberg) and Amy's (Melissa Fumero) wedding -- and then passed out after eating the couple's Nakatomi Plaza wedding cake.
While Cheddar was played by a few different dogs over the course of the show, Stewart took on the role the longest, Entertainment Weekly reported. Stewart is survived by his sister, Stella.
Many "Brooklyn Nine-Nine" fans tweeted tributes on Twitter.