[quote=Tiago]Marcos, Interesting that you mention these kennels. A good friend of mine has dogs from Caramona, Engenho Velho and Amparo. I have personally seen and tested the dogs, but was not impressed. The dogs were very sharp and had a lot of "guard" instinct, but lacked the nerve strength to commit with strong bites. Usually the bites were chewy and lacked crushing power (due to the conflict inside the dog's head). I am curious if the CAFIB temp tests have been designed by actual dog trainers with proper knowledge of canine temperament, or designed by people that observed certain characteristics and decided thats how a proper Fila should be. We actually sat down and watched many tapes of CAFIB shows with temp tests and the pattern for the behaviour which I did not like was always present. Regards and thank you.[/quote] You need to see carefully when you analize the pedigrees because some old Kennels lost all the bloodlines and now they have been rebuilt the bloodline with the same Prefix name. We have now in Brazil to majors lines for working , the Gameleira a nice strain for Hearding but they have high homo zygotic bloodline. The strain from São Jose de Lapa (CAFIB) is my favorite because Olegario have been select dog more functional, short and around 50 kg and were the best temperament for guardian and some of them just for professional owners. I have one strain that we didnt have all the genealogy but these strain have showing good balance, and working ability so as guardian they come from unknowing breeders usually farmers breeders.