Lenin cat was a meme which emerged in mid-2011 based on an image macro of a cat. A cat that looks like Lenin. Aaand… that’s it.
Lenin cat is pretty absurd, but then, that’s the internet. For cat absurdity of a more real-life sort, take a look at the Wikipedia entry for Operation Acoustic Kitty (no, really), a CIA project from the mid-1960s, which planned to use cats to spy on the Kremlin. It cost twenty million dollars, achieved nothing, and its first mission had to be abandoned when a cat with a spy antenna in its tail was hit and killed by a taxi.