The internet mourns the death of ‘Grumpy Cat’

(Photo Credit: Getty Images)

The internet is mourning the death of Grumpy Cat, the feline famous online for her permanent scowl.

According to the BBC, she has died on Tuesday at the age of seven, following complications from a recent urinary tract infection.

Grumpy, whose real name was Tardar Sauce, went viral in 2012 after photographs of her sour expression emerged online, and quickly spread as a meme.

According to her owner Tabitha Bundesen, her facial expression was caused by feline dwarfism and an underbite.

Grumpy Cat subsequently travelled the world making television appearances and even starred in her own Christmas film in 2014.

Madame Tussauds in San Francisco also unveiled a waxwork of her in 2015.