This clip was shown to me by someone who works in a rescue center.

YouTube - ‪Dog Pounds Ireland - Five Days‬‏

Whilst there are many good breeders you have to be sure the puppies should go to good homes and not be another rescue dog.

Also I've been told that no responsible breeder will let one person have 2 puppies from the same litter as they may compete to be the alpha.

Has anyone bought 2 litter mates and how did it work out?