This article is from the Rottweilers Breed FAQ, by firstname.lastname@example.org (Denise Gross).
There are various places where you may acquire a Rottweiler puppy, but
only ONE place where you should - from a responsible breeder. Pet
shops acquire their puppies from puppy mills, brokers and back-yard
breeders. Their puppies are separated from their dams and litters at
too early and age, they are not properly socialized and may well
develop serious health problems.
Puppy mills, brokers and back-yard breeders have only one priority -
to make a profit. They are not interested in the welfare of the
puppies they breed. Beware of petshops that advertise "we get our
puppies from private breeders." No responsible breeder would ever
broker puppies to a pet shop. Don't perpetuate the puppy mill problem
- steer clear of pet shops.