It’s important to note that a dog’s breed does not determine its aggression or fighting capabilities. In fact, a dog’s behavior is largely determined by its environment and upbringing, as well as its individual temperament and personality. Furthermore, dogfighting is illegal in most countries, and promoting or participating in such activities is both unethical and illegal.

That being said, there are some breeds that are often associated with fighting due to their physical characteristics and historical use in dogfighting. Here are some of them:
- American Pit Bull Terrier: The American Pit Bull Terrier is perhaps the most well-known fighting breed. It was originally bred in the United States for bull-baiting, a bloodsport in which dogs were pitted against bulls. When bull-baiting was outlawed, the breed was used for dogfighting instead. Despite its reputation, the American Pit Bull Terrier can make a loyal and affectionate companion if raised properly.
- Staffordshire Bull Terrier: The Staffordshire Bull Terrier, also known as the Staffie, is a British breed that was developed in the 19th century for dogfighting. Like the American Pit Bull Terrier, it is often unfairly associated with aggression and violence. However, Staffies are known for their loyalty, affectionate nature, and playfulness.
- Cane Corso: The Cane Corso is an Italian breed that was originally used as a hunting and guard dog. It is a large and muscular breed that is often mistaken for a pit bull. While it is not traditionally associated with dogfighting, some individuals have been trained for this purpose. However, it’s worth noting that the vast majority of Cane Corsos are used as family pets or working dogs.
- Presa Canario: The Presa Canario, also known as the Canary Mastiff, is a Spanish breed that was originally used for guarding livestock. It is a powerful and imposing breed that can weigh up to 150 pounds. Like the Cane Corso, some Presa Canarios have been trained for dogfighting, but the breed is primarily used today as a family pet or guard dog.
- Dogo Argentino: The Dogo Argentino is an Argentine breed that was developed in the 1920s for big-game hunting. It is a muscular and athletic breed that can weigh up to 100 pounds. While it is not traditionally used for dogfighting, some individuals have been trained for this purpose. The breed is known for its loyalty, intelligence, and protective nature.
- Tosa Inu: The Tosa Inu is a Japanese breed that was developed in the 19th century for dogfighting. It is a large and powerful breed that can weigh up to 200 pounds. While dogfighting is illegal in Japan, the Tosa Inu is still sometimes used for this purpose in other countries. However, it’s worth noting that the breed is not commonly kept as a pet due to its size and strength.
It’s important to remember that each dog is an individual, and a dog’s behavior and temperament are largely determined by its environment and upbringing. While some breeds may have been historically used for fighting, this does not mean that all individuals of that breed are aggressive or violent. Responsible dog ownership, including proper training, socialization, and exercise, is key to ensuring that all dogs are well-behaved and happy members of society.