January 8, 2013—National Geographic attached tiny Kittycam cameras to house cats to find out more about their hunting skills when they head outside.

Cuddly companions or furry assassins: the secret lives of house cats revealed.

I'm Lucie McNeil and this is National Geographic On Assignment-your link to thousands of Nat Geo Expeditions around the globe.

Today, we're off to Athens, Georgia where National Geographic's Crittercam team, and scientists from the University of Georgia used special cameras to find out more about feline hunting behavior.

The footage revealed a cat prowling a neighbor's garden, a trip down a sewer and of course hunting and more hunting. Small lizards topped the list as favorite prey.

One big surprise was that several cats had adopted second owners, even dropping by to get extra meals!

That's National Geographic On Assignment-your link to our Explorers.