I agree with Bob's dad. I see pittie & doxie.

He could have a bigger breed in him, it's kind of hard to tell at that young of an age. But some mastiffs, coonhouds, plott hounds, etc... can look a little long especially so at that age. But his feet & leg joints don't really look like they would be a igger breed.

Guessing puppy breeds is pretty tough, their looks, size & shape can change dramatically when they are full grown.

He is a cutie thuogh, that I am sure of.