This could be an American Staffordshire puppy. Definitely not a Boston Terrier, because the face is round and the ears pointed.
Could also be a boxer to be but I think even more of a Staff or pittbul.
I'm not sure, agree with the other but, is a puppy (you can see on the big paws, so in relation to the body), I think it's a pitbull mix.
I think Pitbull but am not sure
Perhaps a combination of a boxer and a pit bull? :)
Could a Boston Terrier be
America Stafford puppy?