The Taiwan Dog (Chinese: 台灣犬) is a breed of small or medium dog indigenous to Taiwan. They are well-adapted to the uneven and thickly forested terrain of Taiwan, having become a semi-wild breed prior to the arrival of several colonial reigns and foreign powers. Notwithstanding these adaptations, Formosans retained the potential to be trained and are now used as hunting dogs, guard dogs, stunt dogs, rescue dogs, or simply as companions. Young Taiwan dog in Seattle, WA, U.S. The most common type of these three in recent years is the medium-sized dog. Its color can range from black to earthy yellow or yellowish-brown and the nose is black.