Hamsters live short lives, typically about 2 to 3 years, so a few days of illness is a large share of their lifespan. Because they are tiny and hide illness, small changes in eating, weight or behaviour matter. A vet experienced with small mammals can help even a very small patient.
This guide is part of our exotic pet vet guide.
Key takeaways
- Diarrhoea and a wet, dirty rear end (wet tail) is an emergency, especially in young hamsters.
- Lumps are common in older hamsters. Some are abscesses that can be treated.
- Overgrown front teeth stop hamsters eating. Provide safe chews and let a vet correct overgrowth.
- Weigh your hamster weekly on a gram scale to spot weight loss early.
Urgent signs: see a vet the same day
- Wet tail: watery diarrhoea, a wet, smelly rear end, hunched posture, lethargy. This bacterial disease can be fatal quickly.
- Not eating or drinking for a day
- Laboured or noisy breathing
- Bleeding, prolapse from the rear, or injuries from falls or fights
- Cold, unresponsive and very still: this can be torpor if the room is cold, or serious illness. Warm the room gradually and call a vet.
Common hamster health problems
| Problem | Signs |
|---|---|
| Overgrown teeth | Weight loss, drooling, trouble eating |
| Impacted or infected cheek pouches | Swelling on one side of the face that does not go down |
| Abscesses and tumours | Lumps under the skin, common in older hamsters |
| Mites and skin disease | Hair loss, scratching, scaly skin |
| Eye problems | Discharge, bulging or sealed eyes |
| Diabetes (in some dwarf species) | Drinking and urinating a lot |
| Bumblefoot | Sore, swollen feet from wire floors or dirty bedding |
What a hamster vet checks
The vet weighs your hamster in grams, checks teeth, cheek pouches, eyes, ears, skin and feet, palpates for lumps, and reviews diet, cage size, wheel size and bedding. They may suggest a skin scrape for mites or treatment for an abscess.
How to find a hamster vet
- Search for an exotic or small mammal vet rather than a dogs-and-cats-only clinic.
- Ask whether the vet can safely anaesthetise very small animals and what scales they use for weighing.
- Ask local small pet rescues for recommendations.
Our small mammal vet guide lists more questions to ask.
Is it worth taking a hamster to the vet?
Many hamster problems are treatable, including wet tail when caught early, overgrown teeth, abscesses and mites. Vets can also provide pain relief and help you make a kind end-of-life decision. If cost is a worry, see low-cost vet care options.
Frequently asked questions
Do hamsters need vaccines or annual checkups?
There are no routine hamster vaccines. An initial health check after adoption is worthwhile, followed by a visit whenever weight drops or behaviour changes. Older hamsters benefit from more frequent checks.
How do I transport my hamster to the vet?
Use a small, secure carrier with some familiar bedding and a hide. Avoid temperature extremes during travel.
Related guides
This guide is general information for pet owners and is not a substitute for an examination by a licensed veterinarian. If your pet is unwell, contact your vet.
Run a veterinary clinic?
Chenil is a free vet CRM for single-doctor clinics. It sends vaccination and checkup reminders automatically, keeps patient records in one place and handles appointments. See the features or book a demo.