What is a bulldog?

Bulldog refers to a bulldog, which is a subspecies of domestic dog. It is native to the United Kingdom and originated in the 19th century. It was one of the most combative breeds of dogs until it was banned in England in 1835. Before the bull was teased, it was a very common breed. After that, through selective cultivation, his character gradually became more refined. There are French Bulldog, English Bulldog, American Bulldog and other types. The breed originated from an attempt by a breeder to create a non-aggressive Old English Bulldog. By crossing the docile modern English Bulldog with the brave American Bulldog, Bullmastiff, and American Bulldog, he succeeded in eliminating the English Bulldog's breathing problems and tail abnormalities while weakening the stubbornness of other breeds. However, this variety is still highly aggressive and should be noted.