I was disturbed by something that I read recently in the Tufts University newsletter for dog owners. It said that Shelties (as well as collies) are 'particularly susceptible' to nasal cancer. One of the symptoms mentioned was sneezing. My 2 1/2 year old boy Jack sneezes 4 -5 times a day. Of course, since reading this, I'm terrified each new time he sneezes. Have any of you ever heard this before? Jack is my first Sheltie (and first dog) and I had read a lot before adopting him, and I never read ANYTHING like that. Now, I'm listening to his breathing very carefully and basically scared. I don't want to be paranoid, and don't want to put Jack through going to the vet for no reason. Please, anyone, have you ever heard this before? Thank you for reading and answering.