Answer:
A wet nose is normal, but a dry nose isn't necessarily abnormal. Many people think that a healthy dog has a cool wet nose and a sick pup has a warm, dry one. That's not always true. The actual temperature and moistness of a nose is not a good indicator of overall health status.
Explanation:
The wetness of a dog's nose comes from a mixture of saliva and mucus, says Dr. Anita Guo, a veterinarian at the Beaumont Sainsbury Animal Hospital in London. A dog's nose secretes its own, thin layer of mucus, and dogs add even more mucus and saliva by licking their noses frequently.
