A healthy dog normally has a wet, cold nose.your dog could unfortunately be suffering from the flu, could have a problem or infection in her nose, or could have been stung by wasp. I think she might feel very uncomfortable and may be in pain because of the inflamed nose.I recommend taking her to the vet immediately.If you live near the Blue Cross, they will treat animals for free. I really hope this helps. Tell us how she gets on.
