#1 – Airedale Terrier
The Airedale is the largest of the terriers, bred for hunting and guarding. The breed has been used as a police and military dog, although they were originally used for hunting otters. Because of their terrier background, they are known for being aggressive towards other dogs.
#2 – Presa Canario
The Presa Canario was originally bred as a livestock guardian dog, but has also been used as a fighting and baiting dog. Because of this history, they are can be very aggressive towards other dogs. Although deeply loyal to their families, care should be taken when introducing them to strangers.
#3 – Akita Inu
The Akita is a large, dominant and powerful working breed from Japan. They were used for hunting and fighting game such as wild boar, and are known for being intolerant of other dogs, especially those of the same gender. Although they shouldn’t be trusted around other animals, they are exceptionally loyal to their families.
#4 – Boerboel
The Boerboel is a large Molosser from South Africa, where it is used primarily as a guard dog. They are docile and affectionate toward their families, wary of strangers, and typically aggressive toward strange animals, including dogs.
#5 – Scottish Terrier
The Scottish Terrier is small but mighty; a perfect example of what it means to be a terrier. They were bred to hunt and fight badgers and catch other small vermin such as rats and mice. They are tenacious dogs that are known for being dog-aggressive.
#6 – American Bulldog
The American Bulldog is a large bully breed that is known for being quite charming and goofy around its family. They are very emotional dogs that become very attached to their families. Originally bred for hunting and baiting, they are known for being aggressive toward other animals.
#7 – Irish Terrier
The Irish Terrier is one of the oldest of the terrier breeds and is very active and loving toward its family. They excel at various dog sports and make wonderful family companions in the right home. Prospective owners should be aware that they are known for being dog aggressive and should not expect to be able to live peacefully around other dogs.
Bonus – Bulldog
The Bulldog was originally bred for bull baiting; a bloodsport that requires a very powerful and tenacious animal. Although they are robust, silly and affectionate toward their families, they are known for being aggressive toward other dogs.
#1 – Airedale Terrier