Naughty felines are caught in the act; cute kittens attempt to mimic the actions of their human friends.

"Ninja Cats" employ stealthy moves; other categories include "Techno Tabbies," "Feline Foodies" and "Cats With Catitude."

Exploring the canine kingdom; cute dogs; latest videos of guilty pooches; mutts with unusual pals.

The cutest dogs on the web; dogs acting like nannies to human babies; athletic dogs & chatty mutts.

Home videos highlight the most magnificent dogs on the Internet.

Searching for the most adorable cat videos ever posted on the web.

Checking out most amazing dog videos.

From talking kitties and slumbering cats to dancing dogs and dogs that doze, we count down the cutest clips in the web-o-sphere to crown America's Cutest Pet.

Counting down the goofiest and most adorable dog clips.

More adorable kitty videos.

Countdown of the cutest viral video clips of superstar pups.