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.
And moderates to an ultimate weight of around 70 times the puppy's birth weight. Check the puppy growth chart for an explanation of the different puppy development stages and puppy growth rate. German Shepherds normally reach physical maturity at 18-24 months.