Happy birthday, Grumpy Cat! Can you believe that Tardar Sauce, the internet’s least excited feline is only a year old? We figured she was like 115 in cat years. With Grumpy Cat taking over our computer screens, we figured it was only a matter of time before she took over our TV and movie screens as well. Here, the Internet’s Favorite Sourpuss takes over for a few other famous grumps.