Tardar Sauce was one of a litter of four kittens born to a calico mother and a blue-and-white tabby putative father at the home of her owner, Tabatha Bundesen of Morristown, Arizona.

[9] Though the mother and father were described as "normal-sized domestic short-hair cats",[9] Tardar Sauce was undersized and had hind legs that were "a bit different".

[13] On March 22, 2013, Grumpy Cat traveled to New York City promoting the show and appeared on Good Morning America[17] and Anderson Live,[18] and visited Time for a photo shoot.

[20] Licensed merchandise like T-shirts and mugs are advertised on the Grumpy Cat website and sold at Hot Topic.

[24] Additionally, Chronicle Books has published The Grumpy Cat Wall Calendar each year since 2013, with a 2022 edition available as of January 2022.

[30][31] Dover Publications has also published Grumpy Cat paper doll, sticker, coloring, and tattoo books.

[37][38] Tardar Sauce died at her home in the arms of her owner Tabatha following complications from a urinary tract infection on May 14, 2019, at age 7.

Tim Hill, the film's director, and Jeff Morris wrote the script, and principal photography took place over the summer.

On November 6, 2014, Lifetime released a tongue-in-cheek video about the casting and Plaza's "process" for becoming the voice of Grumpy Cat.

[52] In March 2013, Bryan Bundesen indicated that Grumpy Cat earned them income in the "mid-five figures", which increased to "low-six-figures" by May 2013.