at 10 months and 100 lbs, my guess would be a gsd is carrying more weight than need be.
but, i agree, impossible to say without pictures. sadly, there are breeders producing gsd's that are reaching these types of weights without being fat.
Kimba (gsd) 5/9/07
Saby the mutt~1/15/01
Frisco (gsd) 6/21/02
RIP-canines-Buddy, Roxy, Kujo, Kato, Pierre
felines-Chanel, Panther, TJ