I found the header picture for this blog doing a search once for "angry cat," and it was quite obviously one of those. The person who posted it didn't give it a title, but I've thought of a couple over time. "You should be running" is one. "Not enough killing in all the world to make me happy" is another. Because, frankly, this picture looks like a cat that plans to start killing when he gets out of the pool and stop when he's the only living creature left on the planet, and he'll still be ticked off.
His younger colleagues are featured at this post at Bored Panda. Their rage is cute because they are far too small to do any of the damage they want to do; it's hard to rip out throats when you're six inches tall.
No. 2 is kind of like what I imagine a Klingon would look like if it were eight weeks old and covered with fur. But my fave is No. 3, who looks as if it has just been awakened and is deciding whether to conquer the world or slaughter it -- and is thinking that conquering might be a little too much work: