How many hours do cats sleep a day? Do cats imitate humans? Are cats and dogs mortal enemies or best friends? On this special presentation of America's Cutest Cat, we'll count down the cutest kitty clips in the web-o-sphere.

These are the video clips that cause ear-to-ear smiles. From the mini pig that plays the piano, to a cat that prefers the friendship of a dolphin! Today, we count down the most tremendous videos from the web!