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No, rats shouldn't eat raisins. The RSPCA, RSPCA Australia and Burgess all list raisins and grapes among foods never to give rats. Drying also packs a grape's sugar into one tiny mouthful: raisins are over 60% sugar. Sultanas and currants get the same answer. If your rat stole some, keep the packet and ring your exotics vet for advice.
| Safe? | No |
|---|---|
| How much | None |
| How often | Never |
| Best served | Not at all; offer a safe fresh food instead |
| Watch out for | Raisin cereal, trail mix, fruit loaf, chocolate-coated raisins |
Can rats eat raisins?
We say no. The UK RSPCA lists raisins alongside grapes and chocolate as foods to avoid. Burgess says raisins "should never be given" to rats, and RSPCA Australia names grapes and raisins as harmful. That is a practical feeding rule, not a claim that every accidental raisin causes poisoning.
Why are raisins different from a little fresh fruit?
A raisin is a dried grape, not a separate kind of fruit. Most of its water has gone, so its small size is misleading next to fresh produce. The table below shows raisins at 62.6 g sugar per 100 g (3.5 oz), against 16.1 g for fresh grapes. So a pinch of dried fruit is nothing like the same weight of fresh grape. Concentrated sugar is an extra reason not to choose raisins, though it isn't the whole reason for the welfare warning.
Do UK care sources agree?
On raisins, yes. The RSPCA and Burgess both list raisins and grapes to avoid. Woodgreen lists fresh grapes among its examples of chopped fruit for rats, but it does not endorse raisins, and our grapes page explains why we follow the more cautious advice there too. ASPCA Poison Control warns that grapes and raisins can cause kidney damage in dogs; dog advice shouldn't be turned into a rat toxicity threshold, but it is one more reason not to take chances with an optional food.
What about sultanas, currants and cereal bars?
| Food | OK? | Why |
|---|---|---|
| Raisins, sultanas (golden raisins) | No | Dried grapes |
| Dried vine currants | No | Small dried grapes |
| Fresh blackcurrants | Different fruit | Not a grape; don't treat every berry with "currant" in its name as banned |
| Raisin bran, muesli, fruit loaf, hot cross buns | No | Hidden raisins plus added sugar |
| Trail mix, cereal bars | No | Raisins, often with chocolate or sugary coatings |
| Chocolate-coated raisins | No | Two foods the RSPCA advises against |
Raisins are easy to miss in breakfast cereals, fruit loaf and snack bars. Read the ingredients rather than relying on the photo on the packet. Plain, low-sugar cereal such as Weetabix Original is fine as a small treat; a raisin version is not.
My rat already ate a raisin
- Remove the rest. Take the remaining snack away and keep the packet.
- Note what you know. When it happened and roughly how much is missing, and whether there was chocolate or other coatings.
- Ring your exotics vet. Ask for advice for your rat, particularly if the amount is uncertain or your rat seems unwell.
- Skip the calculators. Don't work out a "safe" amount from advice for dogs, and don't try a home antidote.
- Watch closely. A rat that is unusually quiet, off its food or weak needs to be seen promptly.
A calm account of the actual food is more useful to the vet than an internet toxicity number.
The food facts, not a rat serving size
These are values per 100 g (3.5 oz) of the named food, from Public Health England's CoFID 2021 dataset, table 1.3 Proximates. They describe the food, not an amount to feed a rat, and no rat-specific toxicity limit is taken from them.
| Exact entry and code | Water (g) | Sugars (g) | Fat (g) | Protein (g) |
|---|---|---|---|---|
| Raisins, dried (14-393) | 17.4 | 62.6 | 1.0 | 3.0 |
| Grapes, average (14-350) | 81.9 | 16.1 | 0.2 | 0.7 |
What to give instead
For a sweet reward, try a piece of apple without the seeds, blueberries or a little watermelon, each about the size of your rat's ear. Keep chocolate off the list too. The RSPCA recommends a food made for rats as the staple, with fresh variety inside the normal allowance. Our rat diet and nutrition guide, the rat food checker and the safe food list for rats cover the rest, and the pet rat care hub links every guide. People also ask about guinea pig food and hamster food.
Make the usual food interesting
Questions owners ask
Do rats like raisins?
Many do: raisins are sweet, chewy and easy to carry off. That is exactly why they turn up in rat stashes after a snack mix goes missing. Liking a food doesn't make it a good choice, and the RSPCA lists raisins among foods to avoid.
Can rats eat sultanas?
No. Sultanas are dried grapes, like raisins, just from a different grape and drying method. They get the same answer, and so do dried vine currants. Check fruit loaf, cereal and trail mix for them.
Can rats have raisins as a treat?
No. A treat is still food, and the RSPCA's warning isn't limited to daily feeding. Use a piece of safe fresh fruit or vegetable as a reward instead.
Are dried grapes safer than fresh grapes?
No reason to think so. Raisins are dried grapes with the sugar concentrated, and the RSPCA lists both grapes and raisins to avoid. See our grapes page for why the advice on fresh grapes is split.
What if my rat ate a chocolate raisin?
Ring your exotics vet with the packet, roughly how many are missing and when it happened. Chocolate is also on the RSPCA's avoid list, so a chocolate raisin combines two foods rats should never have.
