Newfies are fantastic dogs. I have an almost 15 week old Newfie pup Sadie. From what I can gather so far from my experience with her, they are very sensitive, family oriented, intelligent dogs that live to make you happy. Mine is a problem solver. She has figured out how to open her crate door and also recently discovered that things that are sprayed with Bitter Apple taste better once they've been dunked in the toilet or her water bowl. Smart (bad) girl:D
She lives to make me smile, she sulks when I scold her, is great with my kitties and every other animal/person/child she's come in to contact with so far. In short, she is the love of my life. If you like the breeder, ask lots of questions about the parents and someone told me to ask about the siblings of the parents as well (health wise) if the breeder has that info. Sadie's breeder was great about me asking questions and still is. I email her pretty much on a weekly basis!