Pound for Pound

Dogs that can fight:

First Class American Pit Bull Terrier & Tosa Inu

Second Class Dogo Argentino, Perro Dogo Canario, Bull Terrier, American Staffordshire Terrier, American Bulldog, Bully Kutta, & Fila Brasileiro (Hunting Dog w/ Fighting Capabilities)

Third Class Caucasion Ovtcharka, Neapolitan Mastiff, Akita, Spanish Bulldog, Cane Corso, Ca De Boa, Gul Dong, Dogue De Bordeux, Guatemalan Bull Terrier, Indian Bull Terrier, & Staffordshire Bull Terrier

And finally dogs that have no chance or little of beating the third class but can still hold their own:

The Fourth Class German Shepherd, Doberman, Rottweiler, Shar Pei, Malamute, Bullmastiff, & other popular breeds (too many to mention) Wolf Hybrids, & the rest of the Ovtcharkas

Believe it. When it comes down to pound for pound that's just how it is!