Check out this feline that gives Grumpy Cat a run for its money. The "Zero Day" star and "Late Show" host Stephen Colbert let ...

Grumpy Cat This American Internet celebrity got her nickname from her permanently “grumpy” facial expression. Her real name is Tardar Sauce, and her iconic look is actually caused by an ...

“We hope that his grumpy cat impersonation will strike someone’s fancy or catch the eye of someone looking for a sweet boy who needs a home,” Lake Norman Humane wrote Jan. 16 in a Facebook post.