I have a 12 week old puppy... She makes a strange noise... hard to describe. She's sucking in air really fast through her nose, it makes a sort of snore/pig sound (not high pitched). It happens a few times a day, usually during a nap, but occasionally just when she's relaxing somewhere. Usually lasts 3-5 "snorts" and then she's okay. Just wondering if it's normal? Or do I need to try and get her in to be seen by the vet Monday?