Nibbly

Can hamsters eat grapes?

Best not. Grapes and raisins are on the list of foods care guides advise against for hamsters: they are far too sugary for such a small animal, and in other animals they are known to be toxic. For Russian dwarf hamsters, which are prone to diabetes, even less so. There are safer fruits for treats.

By Nibbly · Updated 28 October 2026

Two Nibbly hamsters, one cinnamon and one white, asleep curled up side by side.

Why not give it grapes

  • Sugar: one grape for a 35-gram hamster is like a whole bunch for a person.
  • Diabetes: Russian dwarf hamsters, Campbell's especially, develop it easily.
  • Unclear toxicity: in dogs, grapes and raisins damage the kidneys and nobody is quite sure why. With such a small animal, it is not worth the risk.
  • Raisins are worse still: the same sugar, concentrated.

What to give instead

For a treat, give a small piece of apple without pips, or strawberry, once a week, or one or two sunflower seeds from your hand. Day to day, low-sugar vegetables like cucumber or broccoli.

Cinnamon Russian dwarf hamster eating from its bowl full of seed mix in Nibbly.

Food in Nibbly

In Nibbly you choose what goes in the bowl: seed mix, which keeps their weight, veggies, light and with a little water, or sunflower seeds, which they love but which are fattening. Overfed hamsters get chubby, and treats from your hand help you earn their trust. Everything they eat is in the feeding guide.

Adopt your hamsters in Nibbly

Frequently asked questions

What if my hamster ate a grape?

Do not panic, but watch it for a day or two. If it stops eating, drinks a lot, has diarrhoea or seems listless, take it to an exotic-pet vet.

What about raisins?

No either. They are dried grapes with the sugar even more concentrated, so they have the same problems or worse.

Sources