What a cutie! Only time will tell, those paws look big! Does he have webbed toes? Saint Bernards do, as I remember very well - they act like swim fins in the water and snow shoes on snow!

He's adorable, something definitely shorthaired as well as Saint in his mix. He doesn't seem jowly enough to be part Mastiff, is he a drooler? Instead of pittie, I see Boxer in his face ...