Molossoid / Mastiff Dog Breeds The Molossoid or Mastiff dog breed group are dogs used during ancient times to protect, defend and fight.
•Aidi also a Working breed dog •Anatolian Shepherd Dog also a Working breed dog •Boston Terrier also a Non-Sporting Breed Dog •Boxer also a Working breed dog •Bulldog also a Non-Sporting breed dog •Bullmastiff also a Working breed dog •Cane Corso also a Working breed dog •Cão Fila De São Miguel Dog also a Herding breed dog •Caucasian Ovtcharka/Shepherd Dog also a Working breed dog •Central Asian Shepherd Dog also a Herding breed dog	•Chinese Shar Pei also a Spitz breed dog also a Non-Sporting breed dog •Dogo Argentino also a Working breed dog •Dogue de Bordeaux also a Working breed dog •Fila Brasileiro also a Working breed dog •Great Dane also a Working breed dog •Hovawart •Leonberger also a Working breed dog •Mastiff also a Working breed dog	•Neapolitan Mastiff also a Working breed dog •Newfoundland also a Working breed dog •Pug also a Toy / Companion breed dog •Rottweiler also a Working breed dog •Saint Bernard also a Working breed dog •Spanish Mastiff also a Working breed dog •Tibetan Mastiff (Do-Khyi) also a Working breed dog •Tosa also a Working breed dog