Formosan Mountain Dog
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. Taiwan Dogs have been genetically traced back between 10,000 and 20,000 years ago, making them one of the oldest and most primitive dog breeds in the world. 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. Formosans are classified into one medium type and two small types.
| Life Span | 10-14 years |
| Weight | 10-30 kg |
What to Know Before Buying a Formosan Mountain Dog
Finding a responsible Formosan Mountain Dog breeder requires more than browsing classified ads or responding to social media posts. The USDA requires any breeder who sells dogs commercially — especially those selling online or through third-party dealers — to hold a federal license and submit to regular inspections. A legitimate breeder should be willing to provide their USDA license number, invite you to visit their facility, and show you where the animals are housed and socialized.
Before committing to a purchase, ask the breeder for veterinary health records, vaccination documentation, and any genetic testing results relevant to the Formosan Mountain Dog. Reputable breeders will also ask you questions in return — about your living situation, experience with animals, and ability to provide long-term care. A breeder who asks no questions and is eager to ship an animal immediately is a significant red flag.
Use the search tool below to check whether any USDA-licensed facilities breeding Formosan Mountain Dogs appear in our database. If they do, review their inspection history carefully. Look for patterns of violations, pay attention to severity levels, and compare their compliance grade with other breeders in the same state. This due diligence takes minutes and can save you from supporting a facility with documented animal welfare problems.
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Search our database of USDA-licensed facilities to find inspected breeders and check their compliance history.
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