American Pit Bull Terriers,
American Staffordshire Terrier (AmStaff),
Bull Terrier (BT),
Staffordshire Bull Terrier,
Miniature Bull Terrier,
American Bulldog,
French Bulldog,
English Bulldog,
Olde English Bulldog,
Boxer,
Boston Terrier,
American Bully,
Bull Mastiff,
English Mastiff,
French Mastiff/Dogue De Bordeaux
Alpine Mastiff,
The American Bandogge Mastiff,
American Mastiff,
Argentinian Mastiff,
South African Boerboel Mastiff,
Brazilian Mastiff also known as Fila Brasileiro,
German Mastiff/Great Dane
Japanese Mastiff/Tosa
Cane Corso Mastiff,
Neopolitan Mastiff,
Pyrenean Mastiff,
Spanish Mastiff,
Tibetan Mastiff,
Dogo Argentino,
Presa Canario,
Rottweiler,
German Shepherd (GSD),
and the Doberman Pinscher.
American Pit Bull Terriers,
American Staffordshire Terrier (AmStaff),
Bull Terrier (BT),
Staffordshire Bull Terrier,
Miniature Bull Terrier,
American Bulldog,
French Bulldog,
English Bulldog,
Olde English Bulldog,
Boxer,
Boston Terrier,
American Bully,
Bull Mastiff,
English Mastiff,
French Mastiff/Dogue De Bordeaux
Alpine Mastiff,
The American Bandogge Mastiff,
American Mastiff,
Argentinian Mastiff,
South African Boerboel Mastiff,
Brazilian Mastiff also known as Fila Brasileiro,
German Mastiff/Great Dane
Japanese Mastiff/Tosa
Cane Corso Mastiff,
Neopolitan Mastiff,
Pyrenean Mastiff,
Spanish Mastiff,
Tibetan Mastiff,
Dogo Argentino,
Presa Canario,
Rottweiler,
German Shepherd (GSD),
and the Doberman Pinscher.