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Are raisins safe for mice? What happens if my pet mouse eats them?

Updated on September 23rd, 2025

do you know if raisins are poisonous to mice? the RSPCA states online that raisins are poisonous to mice

1 Answer

Most Helpful Answer

Dr. Strydom, DVM

Answered By Dr. Strydom, DVM

Veterinarian

Published on March 23rd, 2018

Yes, raisins and grapes are both toxic to mice. Ingestion can cause acute kidney injury (AKI). The mechanism of how grapes and raisins cause AKI is unknown.
There are several suspected hypotheses:

* inability to metabolize certain components of the fruit (ie: tannins, high monosaccharide content)
* there may be mycotoxins or pesticide residues on the fruit that is the issue and not the actual fruit itself
* the presence of salicylate-like chemicals within the grape or raisin

It is best to steer clear of feeding either of these to your mice.

Hope this answers your question. Best wishes.
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