Ever spot a squirrel with weird bald spots and wonder what’s going on? Usually, it’s a skin issue—mites (mange) or a fungal infection break the hair or make it fall out, though sometimes genes or other health problems are to blame.
Let’s dig into why mites and fungi leave squirrels looking patchy. Weather and stress can make these infections worse. Sometimes, fur loss hints at something more serious.
Stick around for the main signs to look for, what you can do (from a distance!), and when it’s time to call for help.
Common Causes of Fur Loss in Squirrels
You might see a squirrel with missing fur, flaky skin, or a totally bare tail. Parasites, fungal infections, or even genetics usually cause these problems.
Mange and Mange Mites
Tiny burrowing mites cause mange in squirrels. They irritate the skin and destroy fur.
The mite notoedres douglasi shows up a lot in squirrel mange. It makes the squirrel itch, causes scabs, and thickens the skin. You’ll spot bald spots, especially on their face, ears, and tail.
If the case gets bad, the squirrel looks thin and weak because it burns a lot of energy fighting the mites.
Squirrels catch mange from each other or from sharing nests. Treating wild squirrels is tough since mites hide in nests and just come back.
If you’re worried about an outbreak, you can remove bird feeders and clean up nests to keep squirrels from crowding together. Don’t try to handle wild squirrels; squirrel mange mites don’t stick to people or pets, but picking up a wild squirrel just stresses it out.
Fungal Infections in Squirrels
Fungal skin infections (dermatophytoses) often leave round bald spots where fur breaks off right at the skin. These spots might look red or scaly, especially when it’s damp out.
A squirrel with stubbly bald patches (not smooth skin) probably has a fungal problem, not mange. Most healthy squirrels clear up mild fungal infections on their own over a few weeks or months, and the fur grows back.
You can help by keeping feeders and nearby spots dry. Try to cut down on places that stay damp. Don’t touch the squirrel—fungal spores can stick to your hands or tools.
In cities, taking down feeders for a couple of weeks can help slow down the spread between squirrels.
Genetic and Inherited Conditions
Sometimes, it’s just in their genes. A few squirrels are born with patchy fur or thin coats.
These inherited issues don’t make the skin itch or cause scabs. The skin looks normal where there’s no fur.
Fox and gray squirrels sometimes have permanent bald spots that just never fill in.
If the squirrel acts normal and eats well, genetic hair loss doesn’t really bother it. You can just watch from afar.
Unlike mange or fungus, these squirrels won’t get better with hygiene changes or treatments. If the follicles are missing, the fur’s not coming back.
Other Factors and Health Implications
When squirrels lose fur, their skin gets exposed. That can lead to wounds, more sickness, and trouble staying warm.
Even a small bald spot can turn into a big problem if it gets infected or ignored.
Secondary Infections and Complications
If you see raw skin or scabs, infection can show up fast. Bites, scratching, or open sores from mange or fungus let bacteria in.
That causes redness, pus, swelling, and makes the squirrel even weaker.
Watch for a bad smell, crusty sores, or a squirrel that moves slow or just sits in the open during the day. These signs usually mean a bad infection or a heavy mite problem.
If a squirrel loses a lot of fur on its face or tail, it might have trouble eating or balancing. That can make it easier for predators to catch or for the squirrel to starve.
Don’t touch sick squirrels. Instead, call a local wildlife rehabber—they’ll know how to check wounds, give antibiotics, or treat mites and fungus safely. Rehabbers also know when an animal can’t recover.
Environmental and Nutritional Influences
A squirrel’s surroundings really matter for its fur and skin. Bad food, pollution, or chemicals like pesticides can mess up fur and weaken the immune system.
If squirrels don’t get enough protein, zinc, or vitamin A, their fur can thin out and look dull. It’ll also grow back slower.
City squirrels often eat junk food people toss out. That stuff doesn’t have what they need, so they lose weight and their coats look rough.
Cold or wet weather makes fur loss riskier. Squirrels need more energy to stay warm, and if they’re already sick, things can go downhill fast.
Crowded nests help mites and fungus spread, too.
If you want to help, offer unsalted nuts and seeds, not bread or processed snacks. And if you think chemicals are hurting local wildlife—like if you see dead or confused animals—let the wildlife authorities know so they can check it out.
When to Seek Help or Wildlife Rehabilitation
If you spot a squirrel with big bald spots, open wounds, or one that acts strangely tame or sluggish, it’s time to reach out to a licensed wildlife rehabilitator. Mild seasonal shedding or a few small, clean bald patches usually aren’t a big deal, but if you see hair loss getting worse, obvious mites, or injuries, that’s different.
When you call for help, try to give clear details: where you found the animal, what it’s doing, and maybe a photo if you can get one safely. Don’t try to catch or treat the squirrel on your own—honestly, you could end up hurting yourself or the animal.
Wildlife rehabilitators know how to check for mange, fungal infections, poor nutrition, or injuries. They’ll figure out the right treatment, whether that’s medication, wound care, or just better food.
You can use a local wildlife directory or your state wildlife agency to find someone who can help. If the squirrel’s in immediate danger—say, pets are nearby or it’s near traffic—move pets away and try to keep the squirrel safe until help arrives.
