What is the minimum cage size for hamsters?

[Kikya]

Well, that is a complicated question. While studies have shown that hamsters need a lot more space than most pet store cages have, there is no specific size number provided by the 2007 cage study (the most often quoted study) that is stated as a minimum size. Also, the study did not take into account any kind of enrichment which is often more important than just size alone. The main passage to read here is: In small cages hamsters made use of the roof of their wooden shelters as an additional platform more often than in big cages, which could suggest that they needed more space. So where did these numbers that hamster Youtubers and other hamster websites throw around come from?

The idea of “cage “minimums” is something promoted by the hamster community to ensure that a hamster is given enough room, so you can fit all the necessary items for hamster care and so they can display their natural behaviors. At one point it was generally accepted that 288 sq in was the minimum, then 320 sq in, then it was decided by vote that 450 sq inches was the minimum.

Most minimums are based off what is the most accessible cage in that country at the time. For example, it’s generally recommended in the US, not to go below 450 sq inches. In the UK, the RSPCA used to recommend a cage of at least 4,000 cms (they no longer post a min size on their website), now it's more commonly recommended that it is 5000cms by the UK hamster community due to increased cage size availability. In Germany, dwarf hamsters are recommended to have a cage of at least 800 sq in and Syrians at least 1000 sq in. In German, you will find some of the largest commercial cages available, hence the bigger minimum size. As larger cages become available, we typically see a rise in minimum cage size recommendation as well.

So, what does this mean? Does this mean if your cage meets the minimum, that your hamster will be happy? Unfortunately, no. A minimum is not the same as ideal or even good. Imagine living your life in one room forever. Hamsters in the wild run miles each night and cover large territories (compared to their size). Obviously, we cannot replicate mile long territories however, we can provide a deep burrowing environment with enrichment. The bigger the cage they have, the more enrichment opportunities can fit in the cage. These things are vital for happy and healthy hamster.

Does this mean you are a cruel person if your hamster is happily living its life and you don't upgrade to the largest cage possible. No, it does not. Cage size minimums are recommendations, nothing more, nothing less. Do not let people bully or shame you into doing something that may or may not be beneficial for you or your hamster.

Realistically the rule of thumb should be, get the biggest cage available to you (and within your budget!), enrich it to the best of your ability and take pride in the fact that you are doing better than than most!

[Spud]

Hiya, could we update the minimum for the UK?
The RSPCA really isn't very reliable for care information about rodents (and now doesn't have a minimum hamster cage size, it used to be 70cm by 40cm until they teamed up with Pets at Home and it miraculously vanished. That's a story for another day though...).
They also say Russian Dwarf hamsters should live in groups, and rehome them in pairs.
The main hamster charity for the UK (and practically every other UK hamster charity) now give 5000cm2 as the minimum enclosure size.

[Kikya]

Hiya, could we update the minimum for the UK?
The RSPCA really isn't very reliable for care information about rodents (and now doesn't have a minimum hamster cage size, it used to be 70cm by 40cm until they teamed up with Pets at Home and it miraculously vanished. That's a story for another day though...).
They also say Russian Dwarf hamsters should live in groups, and rehome them in pairs.
The main hamster charity for the UK (and practically every other UK hamster charity) now give 5000cm2 as the minimum enclosure size.

I modified it slightly to say used to, though I still think it's so widely quoted that people still go by it. This post isn't really about telling people the minimums though. The only reason I listed them is to show that people don't agree on what a minimum should be and to give a bit of the history. I think it would be best if people did not go by minimums, which is why I wrote it that way.

I'm aware of the RSPCA hamster "scandal" and I personally don't think there is enough evidence either way. Many rescues and shops also recommend dwarves in pairs. I'm not telling anyone to go by their or anyone else guidelines, I'm simply stating this is what they were recommending.

We had some discussion about having a min cage size recommendation on this forum but I don't really want to do this as it causes conflict and frankly, doesn't take into account all the factors that go into choosing a cage, available cages, material availability, costs, country differences, species, etc. We did a poll on this before and most people agree that 600+sq for a dwarf and 800+ for a Syrian with a lot of answers smaller and larger.

[Pumpkin]

I was looking at the California Hamster Association website and they support a 600 inch² Minimum Cage size.

https://californiahamsterassociation.com/

[Pumpkin]

Hi all,

I found the cage size standards for each country on The Hamingway website.

It lists the country's minimum by law or recommendations. If it is a recommendation than it is not enforceable by law. It also has what the various agencies/organizations/pet shops have set it to.

It is very interesting to see the vast difference between the Country minimum by law vs what the various agencies/organizations/ pet shops have set it to.

https://www.thehamingway.com/enclosure-standards

[NuzonoNeyom]

Det korte svar er, at der ikke findes en sand videnskabelig "minimums" burstørrelse for hamstere. De fleste af de tal, folk citerer, stammer fra fællesskabsretningslinjer, ikke hård forskning. Med tiden er anbefalingerne steget, efterhånden som større bure er blevet lettere at købe, hvor 450 kvadrattommer ofte nævnes i USA og større størrelser er almindelige i Europa. Men et minimum betyder ikke ideelt. Plads, berigelse og udenlandske casinoer https://udenlandskeonlinecasinoer.com/ dyb strøelse betyder lige så meget. Den bedste tilgang er at få det største bur, du med rimelighed kan, berige det godt og fokusere på din hamsters samlede livskvalitet i stedet for at jagte et enkelt tal.