Dec 292009
 

When taking care of your hamster, you face routine health problems as well as the occasional illness and disease. Let’s first consider some of the routine health issues.

Routine Health Issues

Overgrown teeth: Hamsters are born with a pair of incisor teeth in their upper and lower jaws. The teeth continue to grow throughout a hamster’s lifetime. By gnawing on hard things they can keep their teeth from growing too long.

If the hamster’s teeth get overgrown they could cause problems such as piercing the animal’s mouth. If this happens, see a vet immediately.

You may see your hammy chewing on the metal bars of his or her cage. Some chewing on cage bars is normal. But excessive chewing can break the hamster’s teeth.

Be sure to get your hammy chew toys that allow him or her to properly gnaw their teeth. Wood toys are good, but be sure the wood is not too soft. Some people recommend dog biscuits to help hamsters keep their teeth in check.

Overgrown claws / nails: As with many other animals, hamster nails continually grow and may need to be trimmed. You can trim the claws yourself, or ask you vet to do it.

You can also read Look for Hamster Overgrown Teeth or Nails for more information.

Matted fur coat: Hamsters that have long hair, such as Teddy Bear Hamsters, can get bedding stuck in their hair, causing a section of their fur to become matted. First try gently brushing your hamster’s coat. If the mat is really bad, you may have to use a small scissors and very carefully cut out the matted section of fur. Bathing your hamster is not recommended.

Hibernation: Hamsters are sensitive to temperature. Too hot and they can get heat stroke. Too cold, and the hamster can go into hibernation. This will cause your hamster’s whole body to slow down. They breathe very slowly and look like they are in a deep sleep. You might think the hamster has died.

You will need to warm up the hamster, preferably by taking him or her in your hands and gently rubbing them. Do not do this in a microwave or oven!

If you keep your hamster cage in an area where the temperature is about 68 to 78 degrees F (20 to 25 C) you should be fine. Avoid putting your hamster cage in a window or someplace where it gets direct sunlight. See the article about hamster cage location for more information.

Hamster Illness and Disease

The following are some typical hamster illnesses you should watch out for. They will typically require a trip to your vet.

Wet Tail: Wet tail is a bacterial infection. It is caused by the stress of a changing location (such as from a pet store to home) and too much handling. Look for a wet and soiled bottom area, diarrhea, a loss of appetite, and/or a bad smell. This disease is also contagious, so if one hamster gets it, other hamsters sharing a cage are likely to get it.

The disease can cause hamster death within a short time period, especially when the diarrhea is severe and leads to dehydration. Wet tail is curable, but you should take your hamster to your vet, who will probably give the hamster antibiotics.

Diarrhea: Hamsters can get diarrhea without wet tail. You may notice they still are active and have not lost their appetite, but are leaving soiled bedding all over the place. It is usually caused by the hamster overfeeding themselves with fresh vegetables. You may want to stop feeding your hamster fresh foods for a few days and see if the diarrhea clears up. Then slowly start giving the hamster fresh food again.

If the diarrhea goes on too long, the hamster could develop dehydration, which can lead to death.

Respiratory/Lung Infections: There are a number of causes of breathing problems in hamsters. Improper bedding, such as pine or cedar chips, can cause dust or small particles to get into your hamster’s lungs and cause breathing problems. Look for a slow down in hamster activity, wheezing or a hamster who is having difficulty breathing. Some hamsters may also start sneezing a lot.

Another cause of lung infections can be the aspergillis fungus. This is a fungus that can grow in the hamster’s bedding, usually where the hamster pees. Initially it can’t be seen, but then turns white and finally black. The fungus can then send spores airborne causing breathing problems for your hamster.

If you see any signs of wheezing or breathing problems, get your hamster to the vet immediately.

Skin Diseases: Skin diseases that can affect hamsters include skin infections, ringworm, mites, and allergies. Look for reddening of the skin, bald patches or hair loss, or lesions (growths) on your hamster’s skin. You may also notice your hamster scratching itself more than usual.

You will need to see your vet, who can tell you the exact skin disease and provide the appropriate treatment.


Not cleaning a cage often enough or use of poor bedding, such as pine or cedar wood chips, can contribute to your hamster’s skin disease. See the hamster bedding article for more information about bedding materials.

Abscesses: Abscesses are obvious sores or blisters on your hamster’s skin. Sometimes food will cause abscesses to occur in your hamster’s cheeks. It may look like the hamster is always storing food in his or her cheek pouch.

Abscesses need to be drained, so take your hamster to your vet if you notice one.


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  8 Responses to “What Hamster Health Problems Should I Look Out For?”

  1. my two black bear hamsters have what looks like small scabs but they have have not been fighting or anything they just popped up and the hair in the area looks like it’s clued also they have white spot that showed up out of nowhere please help they are but a few months old.

  2. my hamster has a scab by her eye that never goes away and she just now has like a little blister by her mouth that looks really sore. im really worried about her. do you know what is wrong or what i should do?

  3. Very informative text. I’ve found your blog via Bing and I’m really glad about the information you provide in your posts. Btw your blogs layout is really broken on the Chrome browser. Would be great if you could fix that. Anyhow keep up the great work!

  4. i just discovered a cut on my hamsters lip on the side she wont stop chewing the cage bars..she wont chew on the toys i dont know what to do!? will it heal by it self if i keep her from biting the cage?

  5. Not familiar with gerbil eating habits. Suggest you add a bit more food and observe to see what he does with it. But if skinniness continues, I would take him to a vet for a checkup.

  6. my gerbil is very skinny but i keep a lot of food and he eats it but is still is skinny

  7. Get this hamster to the veterinarian immediately! A hibernating hamster will not usually have shortness of breath.

  8. Siberian hamster is not eating at all, or drinking and hasnt gone to the tiolet in over a week. He is lifeless, he seems to have no energy when handeled or moving around the cage. He seems very jumpy to touch but nothing dramatic has happened him over the last couple of weeks. When he is breathing he seems to be short of breath, but seems to be falling asleep the whole of the time. Is this a sign of a stroke or is he in hibernation ? Im just very worried about him if you could give me any information to make him better.

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