my dog is a 13 year old schnouser(excuse my spelling). lately she has had bad, almost "flu" like symptoms (sneezing, not eating or drinking, runny nose.) my lastest research has led me to believe this my be a tumor moving through her nasal passage. she had a bloody nose for quite some time also. Shes scared of the vets office and i dont want to get her scared at her age. what is this, what can i do to treat this, and am i going to lose my little dog? shes a huge part of our family.