Answer by  
                                                                                          CrisisMeltdown (178)
                                                            
                          
                          
                                                          It is not uncommon for a dog to at first have a wet nose and then have it become dry.  It could be due to the temperature changing. If it's really crusty/flaky that may cause cuts or open sores it would be best to take it into a vet. Nothing to really worry about.