My siberian husky is wierd?

She is 3 months old 19 lbs. shes the biggest of her litter. and eats about 2 2/3 cups of orijen a day. Already understands her name, sit, and go sleepy (means go to her bed). but the strangest thing is that her left eye her pupils goes very foggy and small then it comes back to normal. which is scary. the vet check her out and said shes fine and healthy and really big for her age. but since the eye incident did not happen in front of him he only ran test on her eyes which came back negative for everything. Plus since her size and wooly coat she looks like a malamute with human looking blue eyes. but I have her pedigree generations. and papers. And tail is getting really fluffy but not long. I had her since 8 weeks. is this normal I mean I have 3 other fully grown huskies but never had this problem