Why do German Shepherds have a reputation of being vicious?
In the 1950s, German Shepherds became the most popular dog in the AKC registry. As a result, many breedings were made without regard to pedigree history and inbreeding caused many personality problems. Reputable breeders will usually not allow inbreeding at least 3 generations back in the puppy’s pedigree. Inbreeding and linebreeding can be beneficial in a breeding program if a breeder practices them carefully. Desireable traits can be strengthened, but undesireable traits and faults may be brought forth as well. If you notice inbreeding or linebreeding in the pedigree, question the breeder as to why and what the perceived advantages were. Breeders practicing these breedings should be able to give reasonably educated answers as to why.
