The Great Dane originated in Denmark in 2000 BC and its name comes from French. The Great Dane is mainly produced in Germany, and is also distributed in Italy and Spain. The Great Dane is easy-going, considerate, kind, intelligent, brave, and loyal to its owner. As an independent breed, the Great Dane has been cultivated for about 400 years. Like other ancient breeds, the original breeding of the Great Dane was to help people work. The Germans used the Great Dane to hunt wild boars. Now used for guard dogs, companion dogs, and working dogs. The Great Dane is known as the "Emperor of Dogs" and "Warrior of Dogs" in Germany. It is also known as the "easy-going giant" in the dog world and is easy to train.

The Bloodhound appeared in Europe long before the Holy War, and the first dog came from Constantinople. There are two varieties: black and white. The black breed was a famous St. Hubert hound in the 8th century, while the white breed later became a famous Southern hound. Black blood was imported into the UK. Both breeds play an important role in the development of other hunting dogs and dog breeds. In the 12th century, bishops at that time happened to use dogs as a means of transportation, and church dignitaries were one of the first to develop blood hunting dogs. A large number of senior pastors provide for a group of hunting dogs, and dog farms are an important part of every monastery.

The Great Dane originated in Denmark in 2000 BC and its name comes from French. The Great Dane is mainly produced in Germany, and is also distributed in Italy and Spain. The Great Dane is easy-going, considerate, kind, intelligent, brave, and loyal to its owner. As an independent breed, the Great Dane has been cultivated for about 400 years. Like other ancient breeds, the original breeding of the Great Dane was to help people work. The Germans used the Great Dane to hunt wild boars. Now used for guard dogs, companion dogs, and working dogs. The Great Dane is known as the "Emperor of Dogs" and "Warrior of Dogs" in Germany. It is also known as the "easy-going giant" in the dog world and is easy to train.

The pit bull originated in the United States in the 19th century and is a descendant of Stafford and Bulldog mating. Also known as American Bitdog or American Bulldog. The Bitdog is a breed of dog that has been bred to possess endurance, strong biting power, tough skin, and well-developed muscles. These characteristics make up its powerful 'protective armor', which is used to fight against other dogs and is therefore used in dogfighting. Due to its extreme aggressiveness, some countries have enacted laws restricting the breeding of pit bulls, and even explicitly prohibiting the keeping of pit bulls.