There is alot of information on this breed on the internet. I researched
this breed before I went to the breeder. I have a 2 1/2 yr old neutered male
Fila. Almost everything you read on this breed is true to form. My exhusband has the sister, she was never socialized and has bit many times. I socialized my male, other dogs, children, pets mart, etc. He is not aggressive, but naturally protective. Nothing like a Rottie or doberman. He is about 165 lbs. If you choose this breed, you MUST start with early discipline, "Rio" listens well, but I do not walk him in my neighborhood when most people are walking their dogs. His protectiveness carrys over to being a little weary of other male dogs, and men. If he senses something, he doesnt bark, the hair stands up on his back and he will lunge, it is all I can do to hold onto him, this is where discipline is necessary. This breed is not for everyone. Oh the slobber.....big dogs mean big vet bills........but they are the most faithful breed I have ever had or seen. They are so dedicated to their family.