1, the cow's tail can be flung left and right, playing a good balance when running. 2, the cow's tail is an accessory organ to repel flies. In the hot summer, there will be a lot of flies and mosquitoes, damp barn is the gathering place of flies and mosquitoes, this time the cow's tail will play its role in repelling mosquitoes and flies, without the disturbance of these external factors, the cow can be normal feeding and resting, but also reduce the flies and mosquitoes carry germs infection. 3, the cow's tail can also be used for food, but it is a kind of quite delicious dishes.

The cow, a bovine family, is a tribe under the subfamily Bovidae. Chromosome number 56 bison and 60 pairs of yellow cattle, 58 chromosomes of the large forehead cattle, crossbreeding has fertile offspring, for mammals, prone to Robertson translocation (filament fusion) to change the number of chromosomes to reduce fertility, herbivory, part of the species of livestock (including domestic cattle, cattle, buffaloes, buffaloes and yaks). They are stout, and some bulls have a pair of horns on their heads. Cattle can help humans in agriculture.