I totally agree, been researching mastiffs for a year now. Which is not that long, but i think i got it down. I'd be waiting a bit for a solid litter, and i'm not 100% on a Dogo, i think they have a lot of drive, much more than the average mastiff. So i'd think they'd be fine with me. Does anyone know of any lines that have tall dogo's, Fila4me, i know your first male was 281/2 inches at withers, that's the size i prefer. I know it's not common in the breed, but i'd like a agile dogo ( as the breed is totally known for ), but i'd like a dog with some size, maybe 110-130 pounds for a male, is that not common in the breed?