Traditional Chinese veterinary medicine (TCVM) has been practiced on animals for thousands of years. For nearly 3,000 years, from the Zhou dynasty and the reign of Emperor Mu around 930 BCE. Up until the Yuan dynasty of the 14th century, Chinese medicine was used sparingly on large animals. Much of the focus was on the treatment of horses since they were so essential to the military. In more modern times it has been used increasingly on pet animals. Acupuncture is one of the five branches of TCVM. In historical Asian culture, people known as "horse priests" commonly used acupuncture. The flow of information from the East to the West regarding animal treatment, including acupuncture, is thought to have started from
Mesopotamia around 300 BC. Acupuncture remained a major interest in veterinary medicine for centuries. Its use for dogs was first described in the
Tang dynasty. In the 20th century, animal acupuncture was first introduced in the United States in 1971 by two acupuncturists of the
National Acupuncture Association, Gene Bruno and John Ottaviano. The demand for veterinary acupuncture has steadily increased since the 1990s. Acupuncture charts devised for animals reflect a transposing of human charts onto animals, which, as Ramey noted, is one reason why horses have a "gall bladder" meridian, even though they don't have a gall bladder. In the context of that observation, Ramey concludes that "when it comes to animal acupuncture, there's apparently no absurdity sufficiently large to cause practitioners any embarrassment." ==Practice==