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SESK: Stuff Everyone Should Know · sesk.info/small-hamster-wet-tail

In hamsters, what does "wet tail" mean?

Diarrhea, which can quickly dehydrate a hamster.

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  1. It just had a bath
  2. Diarrhea, a serious illness ✔
  3. It is drinking too much water

Why: Wet tail is a common name for diarrhea in hamsters. Stress from travel, crowding or diet changes makes it more likely. A hamster with a wet, dirty rear needs a vet fast, because diarrhea can dehydrate it quickly.

Huh, didn't know that: Keep a hamster with diarrhea away from healthy hamsters.

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References

Answer: Diarrhea, a serious illness. Wet tail is a common name for diarrhea in hamsters. Stress from travel, crowding or diet changes makes it more likely. A hamster with a wet, dirty rear needs a vet fast, because diarrhea can dehydrate it quickly.

  1. Disorders and Diseases of Hamsters, Merck Veterinary Manual www.merckvetmanual.com/all-other-pets/hamsters/disorders-and-diseases-of-hamsters
    Digestive problems are common in hamsters. Diarrhea, often called "wet tail," is seen often.
    Checked 2026-10-11.
  2. Routine Health Care of Hamsters, Merck Veterinary Manual www.merckvetmanual.com/all-other-pets/hamsters/routine-health-care-of-hamsters
    Diarrhea and other illnesses can quickly cause dehydration.
    Checked 2026-10-11.

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