Hamster Losing Hair: Hamster fur loss causes and remedies

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Hamsters are very adorable creatures that are well-known for their puffed cheeks and soft fur. That’s why if you notice that they start to have bald spots, something must be wrong with them.

This article will tackle various causes of hamster alopecia or hamster losing hair.

Typically, hamsters start to lose hair when they are of age. But if your hamster pet is still young (1.5 years in a human year), there is a severe reason for a hamster fur loss. In this article, we will answer the question “why is my hamster balding” or “do hamsters shed” and what solutions can you do.

Some reasons for hamster baldness are lack of nutrients, parasites, allergy, friction, moulting, excessive moisture and stress, just to name a few. Stress can also be a crucial factor in hair loss for hamsters, just like it is for humans. You need to know the reason for your pet’s alopecia for you to treat it completely.


Hamster Losing Hair - Hamster fur loss causes and remedies

You may wonder why your furry pet is currently experiencing hamster fur loss and if their fur will regrow. It actually depends on the amount of damage that was done. The fur regrowth can take up to six weeks, but it might not grow back if the roots are damaged.

That’s why you need to ensure that the main problem why is my hamster losing fur is diagnosed early to be treated as soon as possible, and the hair loss won’t become severe.


Don’t feel alarmed if you notice a couple of hamster bald patches on your furry pet, as there are many possible reasons why it happened, and it is a common occurrence. Balding or fur loss is pretty familiar with hamsters, but there is no good reason for them to experience such illness.

Unless it’s a sign of ageing, but even with that, there is a big difference between balding from ageing and balding from well, serious health problems.

Your hamsters losing hair doesn’t necessarily mean that they have a disease. It could be a nutrient deficiency problem or being exposed to some allergens. Whatever the reason may be, it is paramount that it gets treated as soon as possible.


Moulting is one of the reasons for your hamster losing hair. They tend to lose more hair during the spring in preparation for the summer season. As summer is the hottest season, hamsters’ shedding makes perfect sense so that they would feel cooler.

Their fur will start to grow back during autumn in preparation for winter.

Syrian and Russian hamsters shed more compared to Chinese or Roborovki hamsters. If the cause of fur loss is moulting, you don’t need to do anything else but wait for the summer season to be over.

Malnutrition/Dietary Deficiencies

Too many whole grains and lacking protein or other essential vitamins can also cause your hamster’s alopecia. That’s why you need to ensure that your hamster has a balanced diet rather than just sunflower seed and corn. High protein, vegetables, and some fruits are essential in a hamster’s balanced diet.

You can also consult your veterinarian about your hamster’s specific foods. Some of the good foods for hair loss include whole wheat pasta, cheese, unseasoned cooked eggs, and unsweetened cereal.

ALSO READ: Why is my hamster running in circles

Hamster skin disease

Hamsters often suffer from mites and other skin issues. These are often caused to unclean bedding or bedding that is infested with mites. It might take a while for you to notice that your hamster is suffering from a skin disease.

In general, hamsters love to “scratch themselves” to groom themselves. But once you notice some bald spots, it’s possible that a skin infection is causing it. We have a guide about hamster grooming and hygiene to ensure that your hamster is always skin disease-free.


Some might be shocked to know that hamsters also get stressed, but they definitely do. Some of the reasons include changing environment or living space, lack of toys, too much human contact, and stimulation in general.

When a hamster is stressed, it might show aggression, shake, squeak, or even sulk in depression.

To alleviate your furry friend’s stress, ensure that the enclosure is big enough because the cage size might cause your hamster stress. In line with that, you must also clean the cage regularly but not too often.

Ensure that your hamster has ample food and water that are replenished daily or every other day. Place the cage in a quiet location because hamsters get stressed by constant loud noise, and most importantly, don’t forget to let your hamster out of the cage for at least 10 minutes a day.


The age-related reason is common with hamster fur loss and hair colour changes. It usually happens to hamsters more than two years of age. The bald patch on hamsters starts at the tummy area and then spreads out to the neck, chest, hips and leg area.

A hamster who just gave birth also experiences hair loss while feeding its babies. However, there’s no need to worry because their hair will grow back as soon as weaning is over.

If the reason for your hamster losing hair is old age, make sure that your hamsters are always comfortable. Some of the things you can do are add softer food to your diet, such as porridge, cooked chicken, steamed veggies, and rice.

Aside from that, you also need to make sure that their habitat is clean and warm. However, don’t overdo it and stick to your usual schedule unless you notice a pungent smell because a hamster will see when their environment changes, which can cause stress.

Rubbing on Something

How To Stop Your Hamster From Chewing Bar Cage Safely
Hamster Losing Hair - Hamster fur loss causes and remedies

One example of excessively rubbing on something is when hamsters bite on bar cages one too many times. Because of consistent friction, bald spots on their nose area may form. Another instance is when your furry pet often rubs against their toys or other abrasive items.

Fights and Wounds

Numerous hamsters living in one cage will cause them to fight because hamsters are territorial and solitary creatures. Fights can result in wounds, which can turn into bald patches. That’s why it’s essential to separate your hamsters once they reach six weeks old. Observe carefully if this is the reason behind your Syrian hamster losing hair.

Excessive Moisture

Having water bottles that leak can also cause your hamster fur loss because moisture affects hamsters as much as it affects humans. The extra water is detrimental to preventing hair growth. 

Ticks or Mites

Ringworms, mites, ticks and fleas can also cause hair loss to your pet. Hamsters with ectoparasites may itch and scratch themselves excessively, which can cause their hair to fall out. If you suspect that your pet has parasites, contact your veterinarian immediately.

Allergic Reactions

Excessive itching is not only caused by parasites. It can also be a sign of an allergic reaction. Some causes of allergic reactions include bedding and the foods that they eat.

For bedding, check if it has any ticks, fleas or mites. You must immediately contact your veterinarian if you’re unsure what the cause of excessive itching is.


You might be alarmed if your hamster pet starts losing its hair but don’t lose hope. Most probably, the condition of hamster shedding fur is treatable. That’s why you need to learn the problem’s root cause on why do hamsters lose hair.

May it be diagnosed by a veterinarian, a diet change, a change of environment or cage and separating them from other hamsters. This part of the article will tackle the solutions to various causes of your hamster’s hair loss.

Vet Visit

Vet consultation is essential and should be one of the first things to consider when resolving your furry pet’s hair loss dilemma. That is because vets can properly diagnose the root cause and give you the most appropriate solution.

You shouldn’t guess what happened to your hamster in these scenarios because it may cause more harm than good. For instance, the vet will prescribe the appropriate medicine if it has something to do with mites. You have to make sure to use medical treatments like antibiotics only if a vet prescribes it. 

Another scenario is that if the problem’s root cause is food-related, they can provide you with the right foods that your hamster should take, the proper amount, and how frequently.

Your vet might take a skin or hair test to know the hamster’s condition. You will be informed regarding this ahead of time so that you can make the necessary preparations. You must use a secured vet carrier to ease the stress on your hamster.

Change of Diet

Ensure you follow the vet’s orders regarding your pet’s food. If you notice that the symptoms come back after the diet change, make sure to inform your vet immediately and bring the new dry mix packet you feed your hamster to the vet.

If your hamster intakes less than 16% of protein, it could result in hair loss. That’s why you should cut back on cereals and feed them with foods containing protein. Here’s our guide on hamster food and diet that also prevents hamster hair loss.

Some good protein sources include seeds, tofu and nuts, excluding almonds. Take note that excessive protein can cause harm as well. Make sure that the protein intake will not be more than 20%. If adding protein does not help, you might consider adding iron to your diet. This will be achieved by feeding them hard-boiled eggs, dried fruit or cereal. 

Put Oil on Bar Cage or Change cage

If the reason for your hamster fur loss is bar biting, you need to put oil or apple bitter spray for them to stop biting the bars. If it doesn’t work, you need to switch to a bar-less cage-like, such as an aquarium or bin cage (plastic box). You can learn more about hamster bar chewing.

Separate the Hamsters

Like what was previously discussed, hamsters in the same cage may regularly fight because they are territorial and solitary creatures and fighting results in wounds, resulting in hair loss. If you don’t want this to happen, make sure that you separate the hamsters once they reach six weeks old.

You can keep their enclosure close but not close enough that they can reach each other, hear, or smell each other. Also, don’t try to reintroduce your hamsters to one another because they might recognize each other as threats instead of being friendly.

Keep the Cage in the Dry Room

Ensure that the enclosure is in a dry room because moisture and extreme temperature changes may cause the hamster to lose hair; use a dehumidifier if needed.

Aside from that, choose a calm and quiet area for your hamster’s cage because constant loud noises also make them feel stressed. If possible, keep a steady temperature between 18 to 22 degrees celsius because they often get sleepy and might start hibernating once the temperature drops to less than 10 degrees.

Put the cages away from windows or air vents because it can get freezing in these areas. Keep them away from extremely hot locations as well, such as furnaces or heaters.


Hamster fur loss isn’t uncommon. They usually shed fur during their periodic shedding cycles. You might notice that their fur becomes thinner during these times, but they don’t become completely bald. 

It is also normal for male hamsters to develop a bald spot on each side of their body where their oil glands are. No treatment is necessary for this as well. 

With these tips, as well as advice from your local veterinarian, your lovely pet will grow back its fur in no time. We hope that this article has been eye-opening and helpful.


Hamster fur loss can result from various factors, including aging, nutritional deficiencies, parasites, or underlying health conditions. If your hamster exhibits excessive fur loss, consult a veterinarian for proper diagnosis and treatment. via @thehamstercareblog

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