Sumatra the toyger bats at leaves on a backyard deck. About 25 breeders worldwide have been working to perfect this tiny look-a-like of the world's largest feline.

Breeders are striving to produce cats with whiter bellies and shorter, rounded ears as well as ropy tails, wider noses, and thicker chins.

• More Photos in the News
• Today's 15 Most Read Stories
• Free Email Newsletter: Focus on Photography