I don't know if you can still see this post, I just found it. My 15 weeks old Corgi girl Sissi has the same hind leg problem like your Muffin. I am very worried and don't know what to do. Would you please tell me how is Muffin doing right now, did you do anything to help with the legs. Thank you so much.
Hi Ha Chuan,
I haven't checked my page for ages and just found your reply.
Muffin is actually doing fine now and she no longer sit like a frog =D
But I still can see that her hind legs are not as strong as the others (her sisters) which are very straight.
But she's doing fine and the legs are not giving her any problems.
I did give her extra dog vitamin which I bought from a breeder here. I think she imported them from USA. She said the vitamins will help with the hind legs and I guess it does help a bit :)