Why Is My Hamster Bleeding? (Causes+What To Do)

Usually, blood loss in Hamsters can be controlled but some situations can be life-threatening, so it’s important to pay attention to the physical condition of your Hamsters. There will be an internal issue if they have blood in their stools or genital discharge and needs to be checked promptly by a veterinary surgeon.

The main causes for bleeding in Hamsters include epistaxis, dysfunction of the reproductive tract, hemorrhagic fever, neutering bleeding, bladder stones, urinary tract diseases, and tumors. Bleeding can also be caused by clipping of your Hamster’s nails too short.

 The most frequent cause of anemia in Hamsters are inflammation and bleeding.

Hamster Essentials
Hamster Essentials

If you notice any signs of blood in your Hamster’s enclosure or changes in their behavior, you must take your little one to the vet. They will guide you and provide your Hamster with proper medication.

Picture Credits: Mouse, The Syrian Hamster; Instagram Handle: thehamstercalledmouse

Main Causes Of Blood Loss In Hamsters

There are several reasons that can lead to blood loss in our little ones. Some of them are chronic conditions, infections or traumas. If such situations are not treated at the primary stage, it can be life- threatening for your Hamsters.

You must observe your Hamster intently and look for the changes in their behavior and signs:

Hamster Blood In Urine

It is not necessary that the blood released with your Hamster’s urine is arising from their urinary system.

The urethra opens along with the wall of the vagina in female Hamsters. Sometimes, this causes certain substances in the vagina to mix up with the urine, which causes bleeding. For example:

  1. Endometrial Adenocarcinoma: Uterine adenocarcinoma or endometrial adenocarcinoma is one of the most prevalent tumors in Hamsters. It is a cancerous injury that arises on the uterus, due to this blood comes out with the urine. Although this tumor rarely spreads, surgery is the only treatment.
  2. Dysfunction Of The Reproductive Tract: Dysfunction of the reproductive tract is the most frequent cause of hematuria in female virgin Hamsters, which is why many owners prefer to spay their Hamsters. The main causes include a rise in uterine cancers and tissues, such as adenocarcinoma.

In these cases, vets usually suggest a urine sample to perform a urinalysis and a dipstick test if you recognize anything uncommon in the urine of your Hamsters.

To collect your Hamster’s urine, placed them in an enclosed area such as a bathtub. Whenever your Hamster pees, collect the urine with the help of a syringe.

Symptoms Of Hematuria

Hematuria is a symptom of pathology, not a situation on its own. It usually occurs as a result of complications relating to the urinary region. 

Some of the common signs of Hematuria are:

  • Anorexia
  • Lethargy
  • Abdominal pain on palpation
  • Frequent bruising from excessive clotting
  • Tumors
  • Perineal dermatitis
  • Distended abdomen
  • Enlarged bladder
  • Difficulty in urinating
  • Weakness

My Hamster Is Bleeding From Nose!

Bleeding from nose is a severe problem in Hamsters and requires an immediate attention from the vet.

Picture Credits: Mouse, The Syrian Hamster; Instagram Handle: thehamstercalledmouse

Periodic nose bleeding in Hamsters may lead to aspiration, hypoxia, hypotension, and even life-threatening cardiovascular problems if not handled sooner.

Signs Of Epistaxis In Hamsters

Besides nose bleeding, epistaxis may lead to the following symptoms and signs:

  • Nasal Discharge
  • Loss Of Appetite
  • Sneezing
  • Excessive Drooling
  • Unusual Stool Discharge
  • Unusual Discharge From Eyes

Causes Of Epistaxis In Hamsters

If your Hamsters have a weak immune system and have been living in unhygienic conditions then their nose may bleed. Some of the common causes of nose bleeding in Hamsters are:

  • Tooth root blemish
  • Bacterial infection
  • Blood clotting problems
  • Tumor in their nasal cavity
  • Foreign particles, such as leftover food particles in their nose

Diagnosis Of Epistaxis In Hamsters

In Hamsters, epistaxis can be cause by a wide range of fundamental problems. Therefore, the vet will do a thorough physical test. Differential diagnosis would most likely be required to determine the root cause.

Your veterinarian will do a chemical blood profile and blood profile, including a blood count. If the necessary clotting factors are available to avoid bleeding, the time for coagulation and blood clotting would be recommended. 

Restricted blood clotting factors may cause hemorrhage and spontaneous bleeding. Visible diagnostics shall include: 

  1. Chest x-ray, for symptoms of tumors and involvement of the respiratory tract. 
  2. X-ray of cheekbones and skull to be analyzed for growths, fractures, or tumors. 

Your veterinarian will conduct MRI and CT scans to inspect for damage or growth. They may perform a biopsy on the samples collected from your Hamsters or on the nasal tissues for examination of the bone marrow if an increase is found.

For the bacterial and fungal diseases, blood and fluid samples will also be examined.

Treatment Of Epistaxis In Hamsters

The best thing to do is to take an immediate action. Bleeding can be prevented by the medications provided by the vet. It is important to take care before more complications.

If there is an infection, antibiotics are prescribed. Also, the treatment will depend on the definitive diagnosis.

My Hamster Is Bleeding From Mouth!

In Hamsters, the main reason behind bleeding from month are dental complications.
Malocclusion is on of the most common disorder which indicates improper ailment of incisor teeth in Hamsters.

Another, complication that leads to bleeding from Hamster’s mouth are their overgrown teeth. Overgrown teeth makes it difficult for Hamsters to chew. These conditions require immediate attention from the vet.


Bleeding from your Hamster’s mouth should not be taken lightly, it can lead to serious health complications in the future.

The main causes of bleeding from the mouth are bladder stones, internal hemorrhage, dental issue, or by chewing stiff wire.


If you ever notice your Hamster bleeding from the mouth, the first thing you must do is take them to a vet.

Besides the medication given by the bet, give your Hamsters unfiltered water and a diet rich of Vitamin C.

My Hamster’s Nail Is Bleeding!

Hamsters are active animals and cannot sit in one place for a very long time. Therefore, it is important to trim their nails on a regular basis.

If your Hamsters has long nails, they will not be able to dig and will weat down their nails on the floor of your house.

You might have noticed by now, the nails of Hamsters grow curly, and are too long inside their feet. It can easily catch or tear on object if not trimmed regularly.

In some cases, you may also find that your Hamster’s nail fell without any injury or blood. If your Hamster has an injured nail, it can result in irritation, pain, bleeding and also causes bleeding in some cases.

If you notice any kind of swelling or redness near your Hamster’s nails, within first 48 hours of injury, then it can be a sign of bacterial infection.

Causes Of A Bleeding Nail In Hamsters

Hamster nails are very delicate, and can cause severe pain and bleeding, if wounded.

Bleeding can be caused if you cut their nail inappropriately or trim them too short. 

If your Hamster’s nail is bleeding, it must be looked after or else it could lead to an infection. Your Hamster may suffer from bumblefoots, if their nail bed is exposed to wet flooring for an extended period.


If you feel that the wound is really bad, it is advised to take your Hamsters to the vet.

For the time being, you can apply styptic powder, it will help to stop the bleeding. Flour can also be used instead of cryptic powder.

Simply apply the pressure to the nail tip, which can be useful for minor bleeding.

Hamster Bleeding From Bottom/ Private Part

If you ever notice your Hamster bleeding from their private part or the bottom area, immediately take them to a vet.

It it very important to understand the your Hamster’s private part, it can make you prepare if you notice different signs, such as blood stains on the bedding, straining in the litter box, and mass sticking out from your Hamster’s back end.


A papilloma is a rare tumor of the skin, in Hamsters. Papillomas usually bleed easilt, and their color is either white or pink.

A papilloma will formulate at the intersection of rectoanal and stick out from the anus.

It can be challenging to identify a papilloma when it is tiny unless pressure is applied or when stool is being passed out. Papillomas become more noticeable as they grow and start to stick out.

Papilloma can get crusty and develop into or become affected by an ulcer. They can also grow huge to stop the anus.


Although it is impossible to discern between two, the polyp is made up of solid matter, while the hemorrhoid is packed with fluid, caused by a rectum or anus.

Hemorrhoids are caused by extra pressure on the vein, which can be resolved by strong anti-inflammatory medications.

They don’t cause a lot of swelling to block the anus and most of the time, fix it on their own. However, once they get big enough, they would have to be surgically removed.


The main causes of syphilis in Hamsters are the bacterium, Treponema cuniculi, and lesions that appear similar to papillomas.

However, syphilis lesions are caused by areas of tissue around the mucocutaneous junction of the anal opening, including the pupils, tongue, nose, and urogenital regions of the Hamsters.

Lesions may tend to be elevated and crusty during the early stages of the disease. If the situation continues, it is formulated into large papillary nodules that turn into or become infected by ulcer and bleed.

Hamster Bleeding After Spaying

After spaying or neutering, most male Hamsters return to their normal health or behavior.

Picture Credits: Dora, The Syrian Hamster; Instagram Handle: thehamstercalledmouse

There are some rare cases, where the remaining scrotal sac fills with blood. Also, this causes the scrotum to become purple and enlarged.

In these cases, vets may recommend soothing your Hamsters by applying cold packs to the affected are until the internal bleeding stops.

Check your Hamsters periodically to make sure your Hamster’s stitches are not coming out or are being removed by your Hamsters.

If you find any signs of external bleeding or if your Hamsters are pulling the stitches, contact the vet.

Hamster Bleeding From Nipple

Blood discharge from the nipple of Hamsters are very rare. Although, blood discharge from the nipple can be the symptom of an infectious disease.

Discharge of blood from the nipples can turn to a serious infection, if not taken care at the primary stage.

Causes of Bleeding Nipple

Breast cancer, the bladder stones, mastitis, tumor, and inflammation can cause bleeding from the nipple, in Hamsters.

Treatment of bleeding nipple

An X-ray will help you to determine the real cause of bleeding.

An ultrasonography is the best way to inspect the purpose of the discharge from the nipple.

Hamster Bleeding From Eyes

Some infections can cause blood loss from eyes in Hamsters. It may be hard to believe but some dental complications can also lead to eye problems in Hamsters.

Your Hamster’s eyeballs may look blue and bloody, if they have an eye infection.

Causes Of Bleeding Eyes

The main causes of bleeding eys are unhygenic living conditions and urinary ammonia in the bedding.

Several health complications can also lead to bleeding eyes in Hamsters.

Treatment Of Bleeding Eyes

Antibiotic eye drops and oral antibiotics are required to control an eye infection. 

Firstly, wrap your Hamsters safely in a towel, and then put the eye drops. Or else, you can take your Hamsters to the vet.

Your veterinary surgeon will clean the area affected and remove the discharge by giving it a light antiseptic eyewash before applying the eye drops.


Although bleeding in Hamsters is a serious problem but it can be treated with proper care and medication. Blood loss in Hamsters can be from various parts of their body such as their nose, mouth, anus, nipple or eyes.

The main causes of blood loss in Hamsters are trauma, infection and chronic diseases. If not taken care at an early stage, it can lead to several health complications.

There are maily eight causes of bleeding in Hamsters. The first one is blood loss with urine. It is cause by the the dysfunction of the reproductive system or due to endometrial adenocarcinoma.

The second one if bleeding from Hamster’s nose. It is another severe issue which is cause due to a weak immune system or unhealthy living conditions. Nose bleeding can cause tumors, fungal infections, etc. It can be treated with the help of antibiotics and other medications suggested by the vet.

The third one is blood loss from the mouth of our Hamsters. It is caused mostly due to dental complications and requires attention from the vet.

The fourth is bleeding from nails. If the wound is not serious, it can be treated by applying styptic powder.

The fifth one is bleeding from the anus. Hamsters are prone to several infections if they are bledding from their anus, therefore they must be taken to the vet to get proper treatment.

The sixth one is blood loss in Hamsters after spaying. It is not always harmful to Hamsters and mostly can be treated by applying a cold pack, which will help to stop the bleeding.

The seventh one includes bleeding from the nipples. If your Hamsters are bleeding from their nipple then they need to be addressws immedialty as delay in treatment can cause various infections.

The last one is blood loss from the eyes of your Hamsters. The main reason behind this is unhygienic enclosure and urinary ammonia in the sleeping area. It is best to take your Hamsters to the vet in such cases, they will suggest you an appropriate oral antibiotic or antibiotic eye drop for your Hamsters.

Sources: Urinary Stones In Hamsters, Endometrial Adenocarcinoma In Hamsters, Adenocarcinoma In Hamsters, Syrian Hamsters,


Hello, I am Mohini, the founder of this blog. I am a qualified Animal Nutrition. I am here to help everyone understand their pets better.

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