Our two new kittens, which we think are around 12 weeks old, tend to have the sneezes. I figured this was normal, but they do sneeze a lot, and actual snot comes out, yuk! They seem to be gagging on hairballs a lot, which I also thought was normal because they are fuzzy kitties. They are going in to the vet soon, but in the meantime I thought I'd check in with you all!