Personally I think in the wild 500g at 4 years old is probably about right.
Taking into account food supply/seasons etc.
So perhaps these 'dwarf' ones are really just 'naturally' grown ones?
She does seem to have put on weight more quickly now she is on large weaners, from your post above.
Last edited by cazyp; 24-02-2012 at 08:23 PM.