Author: Gennady Zavolokin The cat named Tartar Sauce, better known as Grumpy Cat, is exactly one year old. The owner of the gloomy beast reported this on his blog . Grumpy Cat is perhaps the most popular internet animal, in the same category as the Stoned Fox. But if the fox is loved mainly by the inhabitants of the Runet, then Grumpy Cat has worldwide fame. The cat took over the world very quickly - its first photos appeared on Reddit only in September last year.