Question: dog breeds that are dog aggressive?
Answer: Akita. This large, Japanese breed is often used as a police or guard dog in its homeland due to its protective nature. ... 
American Staffordshire Terrier/American Pit Bull Terrier. ... 
Cane Corso. ... 
Chihuahua. ... 
Chow Chow. ... 
Doberman pinschers. ... 
German shepherd. ... 
Perro de Presa Canario.