My pet mouse's fur is separating near its tail. Is this an emergency?

This could be local infection or trauma caused by a cagemate. Separate him if you can and see if the hair loss resolves. Use as dust free a bedding as possible to prevent sneezing. Monitor for lethargy, nasal discharge or decreased appetite. He may need to be physically examined by your veterinarian to diagnose respiratory infection and have antibiotics dispensed.

First of all, Maizy looks more like a rat in the picture, unless she is an extremely large mouse. the lesions looks like a wound at the moment, but if it started as a lump it could be an abscess or a tumor. you will have to take her to an exotic vet specialist to get this checked and treated, if it is an infection she will need a course of antibiotics in order to heal properly.

Thank you for using Petco Pet Education Center, formerly Petcoach! I can see that Hades has some hair loss, redness, and scratches on his neck and shoulders. This can be caused by fur mites, a skin infection, or a condition known as ulcerative dermatitis. A vet will be able to take a small sample of fur or skin to determine the cause. In the meantime, I recommend trimming Hade's hind nails to prevent him from scratching and causing trauma and applying SSD (silver sulfadiazene) ointment once daily. I hope this helps!

Thanks for reaching out. Scratching to the point of bleeding and wounds, is likely fur mites, which are difficult to see with the naked eye. A veterinary visit is recommended to take a skin scraping and examine under the microscope. If positive, both mice need to be treated. Good luck.

Thank you for using Petco Pet Education Center, formerly Petcoach! The condition you are describing sounds a lot like ulcerative dermatitis, a condition that is very common in mice, though the cause is unknown. The condition is characterized by very itchy wounds that form crusts, but unfortunately the cause is unknown. It may be caused by stress or an autoimmune disorder, but these are merely theories. Fortunately, the wounds often heal on their own - you can trim the hind nails carefully and apply SSD (silver sulfadiazene) ointment to the area twice a day. If the wounds become severe or very deep, you may need to seek veterinary care for pain medication.

Monitor for redness, bleeding or excessive scratching. Clean and sanitize the cage and cage furniture. Discard anything that cannot be sanitized. If the bald patch increases in size or if she develops any of the above symptoms, have her examined by your veterinarian or a vet experienced in treating pocket pets to diagnose illness or injury. If she has cagemates, monitor for barbering (over grooming by other mice).

for right now, keeping Eliot fed & providing adequate moisture is the key. Soaking his pellets, offering fruit & vegetable baby foods, even using Oxbows Critical Care for bunnies is appropriate. If he is still symptomatic on Monday, have your veterinarian evaluate him in case he needs deworming or an antibiotic. Thanks for using Petco Pet Education Center, formerly Petcoach, & sorry for the disconnect. The dog hit return on my keyboard.