[quote=MASTIFFKB]Please tell us more about the SJL Fila line and the ones you used.[/quote] MASTIFFKB SJL is the oldest bloodline of the filas in breeding program till now, using natural selection in brazilian farms environmental. Also the strain of SJL have been won many temperament competition in CAFIB SHOW's (Ojeriza) and conformation Show in Europe (FCI).