I hope you've heard of The Oatmeal.
I presume you have.
They have some awesome cartoons (informational too) going on, just check out their site at http://theoatmeal.com to view.
One cracker of an article/cartoon strip is this: http://theoatmeal.com/comics/cat_know (where I took the header)
On a side note, check out my kitten; it may not show signs of total Machiavellian intelligence, but it knows how to play fetch which is damn cool: http://www.youtube.com/watch?v=tVGSTMPYdCE