Gender Medicine in Europe. Females Are Mosaics: X Inactivation and Sex Differences in Disease. The word mosaic is a form of work of art in which pictures are produced joining together minutes pieces of glass, stones and other materials of different colors.
Most GSDs will live to be between 10-13 years of age while 11-12 years is generally considered the average lifespan. A German Shepherd Dog becomes middle-aged between 6 to 7 years of age, and a GSD is generally considered geriatric at around 10. More senior GSD info.
YO German Shepherds are a large breed dog. If fed a diet that is too rich for their stage of development they may develop panosteitis (wandering leg lameness, also known as growing pains). At about six months of age, Shepherd puppies should be switched from a growth formula (puppy food) to a quality adult diet unless a vet says otherwise. Feed the highest quality of dog food you can afford. Start out by feeding the amount recommended on the food bag for your puppy's weight.