
Breeding dogs isn't a job it's a passion for most people. Most reputable breeders do not breed often enough to provide you with a job, what I think you mean is that you would like a Job in a Newfoundland Kennels. There are vocational qualifications you can take in animal care. I would say that most private hobby kennels could not afford you a decent living, as there are few very large one breed kennels around. A career with dogs is possible if you want to diversify your interest into Boarding or Rescue. I am sure others will point you in the right direction of the organisations running these courses. In the meantime you may be able to get a part time joc (weekends and Evenings) at kennels, though maybe not specifically Newfoundlands. Good Luck :)