I just learned from my sister today, whose GSD is shedding to beat the band, that shedding is not really 'seasonal', but, light induced! I thought it was too early for dogs to start blowing their coats..but, she said it all depends on the daylight the individual doggie gets. So, someone that might have their doggie outside alot might start shedding before a more inside type dog.

Maybe your guys are just getting a head start? Binx is still retaining his coat, thank goodness.