While out last night walking my dogue I met a lady walking a male 15week GSD pup. We spoke for a few minuets about each others dogs. The lady told me something I found very interesting and never heard off before. She told me that her dog was from a litter of 5 male pups and that they were handed into a shelter at two weeks because the breeder (probably BYB) belived the litter was flawed because it was all male. Is this true, is a single sex litter a sign of some genetic fault ?