Yea I was doing research on Orks and couldn't find much for age. Course since they fight so much only the Warbosses and Nobz would be really old, since they have lived through so many battles. 

I was surprised to find out they are the same size as humans, just way wider and beefier. Always pictured them being Space Marine like in height. Again, probably just the older and higher ranking ones, since I did find that they continuously grow over time.


EDIT: CS finally complete. Sent off to Da Boss for approval.