My hamster’s nose is losing fur and is red down to the flesh
Expert Answer
A hamster’s nose losing fur and turning red can have several causes. It may be allergy or skin infection such as fungus or mites; take the hamster to a vet to identify the pathogen and treat it.
It can also come from nutritional deficiency, so provide balanced protein, fat, and vitamins; from parasites, so deworm regularly; or from poor environment or cage rubbing, so keep temperature and humidity suitable and stop the hamster from scraping the cage. In all cases, first disinfect the exposed skin, fit a properly sized Elizabethan collar to prevent further rubbing, then treat the original cause.