Dry, cracked and scabbed dog noses may be caused by weather changes, environmental influences, bacterial infection, parasitic infection, canine distemper, gastroenteritis, etc. You need to observe whether the dog has other abnormalities. If the dog appears to be in poor spirits, , loss of appetite, vomiting and diarrhea, etc., it is best to go to the pet hospital immediately for examination and treatment; if it is a skin disease, the dog needs to be treated in time to avoid the spread of the disease; if it is caused by changes in the weather environment, don’t worry, the dog will be will recover on its own.