Thanks for all of the advice, I live in WA and have had a couple of recommendations for a specialist, I think I will ring and see how long it takes to get an appointment and then organise one for 2 months time when there should be some improvement if it is diet/excersize related.
She was xrayed by the vet and there is no actual bone damage yet (as far as he could tell, and they looked perfectly fine to me), he just said there would be if she didn't get the weight off and stop over doing it with jumping, walking on back legs and running as her ligaments(?) are way too long, allowing her hips to pop in and out.
I did contact the breeder a couple of months ago as she was already 6 kilos at 4 months (from memory, not sure exactly) and I was worried. Her reply was that the other puppies in the litter were also that weight. Obviously getting the sinking feeling that I have paid a puppy farmer.
Has anyone got some advice about encouraging your puppy to swim, we haven't had much luck so far, she will go into the estuary but she won't go so deep she has to swim.
Jess