I SWEAR its not a rat. From NBC10:

Her name is “Tiny.” How tiny is she? A mere 7.2 inches long.

If Guinness authorities confirm the measurement next week, she could be confirmed as the world’s smallest dog.

The dog is owned by an Indian couple, both doctors, who filed for the record after looking at a Web site that showed a 7.4 inch Chihuahua from Slovakia as the world’s smallest dog.

Dog lover’s can view a clip of Tiny here. Personally I would have named her “Killer” or “Cujo.”