Why Do Dogs Go Bald On Their Noses. If you’ve ever seen your pup paw at their eye or even scoot around the carpet on their face, it’s because they’re trying to rub that eye. The most common cause of a clear nasal discharge is not allergies, it is just nervousness.
This can be caused by infections, parasites, fungi, lesions, food allergies,. Another theory is that the dog isn't trying to get a scent on them, but to put their scent on the ground. Dogs can have two different signals to their nose touching greeting.