Grumpy Cat, who was born in 2012 with feline dwarfism and an underbite, rose to fame as an internet meme. Her face was used to sell various products, earning nearly $100 million in two years.
Ta-Miu, Prince Thutmose's cat, was mummified and buried in a decorated sarcophagus. It is on display in the Cairo Museum and represents the Ancient Egyptians' love of cats.
Nikola Tesla's childhood cat, Maak, inspired him to create modern electricity by producing "sheets of light" when Tesla petted his back.
Oscar, also known as Unsinkable Sam, survived three WWII shipwrecks. He served in the German and British navies before working in the Gibraltar office buildings.
Morris was an iconic orange tabby tomcat who served as the 9Lives cat food mascot. He served as the brand's mascot from 1968 to 1978, and his successor can still be seen in commercials today.
Scarlett, a stray cat, made headlines in 1996 after rescuing her kittens from a fire, despite being severely burned herself. The majority of her children survived, though one died as a result of a virus.
Little Nicky, the first commercially produced feline clone, was cloned from a 17-year-old Maine Coon. Owner paid $50,000 to have Nicky cloned and reports a similar personality and appearance.
Ted Nude-Gent played Mr. Bigglesworth in Austin Powers. He was extremely trainable and sociable, to the point where filming was delayed due to his obsession with Mike Myers' lap.
Koko, the famous gorilla, chose All Ball from a litter of abandoned kittens. She raised him until he was tragically killed by a car. Koko's emotional reaction demonstrated to the world her cognitive abilities.
Tama, a female calico, saved a rural Japanese rail line by taking over as station master. She contributed $9 million to the local economy and prevented the station from closing.