The Taiwan Dog (Chinese: 台灣犬) is a breed of small or medium dog indigenous to Taiwan. These dogs are also known as the Formosan Mountain Dog, Taiwanese Canis, Taiwanese Native Dog (台灣土狗) or Takasago Dog (高砂犬). 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. The muzzle tapers a little from the base to the nose, but it is not pointed at the tip. Tail: In the shape of a sickle, set on high, carried erect, active, with the tip curving forward. 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.