The Jewish Babylonian Talmud – Section Moed – Tract Sabbath – Regulations concerning what may and may not be worn by animals on the Sabbath.
p. 91 CHAPTER V. REGULATIONS CONCERNING WHAT MAY AND MAY NOT BE WORN BY ANIMALS ON THE SABBATH. MISHNA I.: What gear may we let animals go about in and what not? 1 The male camel in a bridle; the female cannel with a nose-ring; Lybian asses in a halter, and a horse in a collar. All (animals)