Sirius is our first Mastiff, he is neutered. We obtained him through an ad in the paper, he came out of a litter of five boys three were "fluffies" and two smooth coat. Sirius is the most gentle, careful and extremely loving Mastiff I know. He loves his Mom and has been the easiest one to train, he was potty trained at nine weeks old. There isn’t a trick or command he doesn’t know, I honestly think he's the smartest one by far! But of course he's my baby boy so I have to say that. Sirius lives by his name and is truly the Lord or our Manor. He has been an absolute joy to have in our lives.