The lesser ricefield rat, listed here as the Losea rat, is a species of rodent in the family Muridae. It was first described by Robert Swinhoe in 1871 and is found in China, Laos, Taiwan, Thailand and Vietnam (Wikipedia, general species account).
The cached account is very short and gives no description, habitat, diet or breeding information.
Description: Wildlife of Vietnam guide, Wildlife of Everywhere (wildlifeofeverywhere.com); general species information paraphrased from Wikipedia (CC BY-SA)
Mammals of the World