Watch Grumpy Cat's Music Video, 'Cat Summer'

The most famous faces of feline Internet celebrity star in the "Cat Summer" music video above. (All but our music-loving friend Lil Bub.) Grumpy Cat, Nala Cat, and Hamilton the Hipster Cat, plus Oskar the Blind Cat and his housemate Klaus, are the unusual model/actors booked for this clip set at a sizzling summer BBQ and shared by