oké oké i will tell ... this dog is a Belgian draft mastiff.

it was used in the first world war to pull small machine guns and ammo.

but it's actualy a farm guard dog and draft dog.

this is a bi color version but it's not very common they are more known in a brown or fawn color

they start from 70-80 cm at the withers for males and 68-75 for females but as some of you noticed this dog was still young

they weigh in at 50kg for females and 60kg for males

the breed was recognized  untill it went "extinct"

in belgium they still had some unregisterd dogs left and they are trying to revive it since the early 2000's 

in 2010 it was approved as a revive project for the FCI

i will put up a picture of a more commonly known version.