rescued lab

Question
I recently(about a week ago) rescued a full blooded lab retriever and upon bringing him home i noticed that he has is polydactyl on both rear legs (7 toes on one foot and 6 on the other). I didn't think this was a big deal but when mentioning it to a vet tech of she stated this was often time an early indicator of early arthritic and muscular problems i have researched it and can't find much info on labs but did find info on this being an indicator for german shepards and many other large breeds. Also the puppy is 9 weeks old and is shedding fur in small clumps he has a very thick coat so it does not appear to be thinning at all and i have read that labs shed a "puppy coat" but not til 6mths to 1 yr do you have any knowledge on either of these issues? thanks so much!

Answer
I haven't heard of extra toes causing joint problems,but have heard of them being a problem for catching on things ect so you may want them removed to prevent them being torn ect also they are a problem to cut

As for shedding,labs shed A LOT esp as puppies,so unless the coat is thinning there isn't anything wrong