Cattle dog, Australia, also known as Australian dog, blue dog and thrush dog, is a large animal husbandry dog. From Australia. It is said that in about 1840, when animal husbandry and other animal husbandry centers were transferred from England to Australia, people hoped to cultivate animal husbandry dogs suitable for continental climate. Therefore, an Australian named thomas smith Hall bred an Australian bull and dog for the first time by crossing an Australian wild dog with a Scottish short-haired shepherd and an English black dog. 1963 and 1980 are recognized by Australia and the United States respectively, and now they are very popular in Australia.

Cattle and dogs (Figure 3-26) weigh 15 ~ 18kg and are 43 ~ 5 1cm high. The coat is short and tight, smooth and shiny. Among them, the hair on the chest and back is short and straight, and the hair on the lower chest, abdomen and limbs is short and dense. Mottled hair is one of its main features. Spots are distributed in the head, ears are mostly black, face is red and yellow with white stripes, body is dark blue with light blue spots, limbs are mostly red and yellow with a little light blue hair. The head is moderate in size and the forehead is small and prominent. The nose is short, the nose is straight, and the nose is small and black. Eyes are peach-shaped and dark. The mouth is narrow and trapezoidal, and the mouth is cracked. The ear root is hard, the distance between the two ears is small, the auricle is slightly smaller, and the ears are upright. The body is strong, all parts are balanced, and the abdomen is slightly rolled. The tail is long and drooping, covered with long hair.

The dog is alert, brave, alert, diligent and loyal to his duties; Being able to jump on the back of a cow to command and look after the herd is an excellent shepherd dog.