Bar Climbing
Bar climbing also known as monkey barring is a stress related behaviour. Hamsters are naturally a ground dwelling species, they do not have a tail to help them climb and balance like a rat. Hamsters climb the bars when their cage is too small or there is not enough to do, this can be very dangerous to hamsters as their paws can get twisted or they could fall on hard things resulting in injuries. To prevent bar climbing in cages we suggest putting things around the bars, for example Perspex lining or grass mats, you can find solutions in our article here.
Bar Spacing
The bar spacing for hamsters should be 1cm, any bigger and it should be securely meshed to be on the safe side.
Bedding
The best bedding for hamsters is paper bedding that resembles clumps of tissue, brands such as Carefresh and Kaytee are popular. This type of bedding is good for holding up the structure of a burrow. Other textures can also be added, safe types of wood such as aspen or spruce and soft hay can also help hold up the structure of a burrow, please take a look at our hamster bedding page. It has been proven that a hamster is happiest when they live underground in a burrow, research shows this also prevents bar biting which is a sign that your hamster is trying to escape their cage. Some owners simply choose to use plain white unscented toilet roll ripped up into small pieces.
Any kind of fluffy bedding is not appropriate at all. The RSPCA “serious risk” advice against the use of fluffy bedding can be seen here.
The RSPCA say: “Don’t give hamsters nesting materials that separate into thin strands, e.g. cotton wool or similar ‘fluffy’ bedding products. They pose a serious risk to their health and welfare, due to the possibility of entanglement or ingestion.”
Don’t give hamsters Scented Bedding “It must be like being in a lift with someone constantly spraying perfume”. Instead Spot Clean to reduce smell. Having a larger enclosure and providing more bedding so your hamster can make a burrow has proven to reduce smell.
Breeding
Breeding is something we discourage as it’s a complicated process that needs to be left to the experts. They have specialist care, pairings and diets. You should never breed hamsters that have been bought from pet shops.
Advice if your hamster has babies:
- Take the wheel out of the cage, if mum uses it and the babies are close they could get hurt.
- Feed mum a lot of proteins: Cooked – eggs, fish, chicken or beef, you can also give her cottage cheese and meal-worms. It’s very important that she gets her proteins as lack of energy can make her eat the babies!
- Most importantly, stay away from her and the babies, don’t stress her out, don’t even clean the cage, don’t touch her or the babies. If she doesn’t feel safe she’ll eat them as well. Put the cage in the calmest place in the house for at least two weeks without any interaction.”

Burrowing
It is important to provide your hamster with a deep section of the correct type of bedding so that they can make a burrow and sleep underground, just like they would in the wild. Research shows that hamsters are happiest when they are able to make a burrow, it has also been proven to completely eliminate bar biting which is a sign of a hamster trying to escape its cage. Allowing your hamster to burrow and create a chamber underground, provides them with warmth and makes them feel safe.
Cage / Tank
Nowadays hamster keepers are preferring to choose a Tank over a Cage as it allows them to provide a deep layer of bedding so that their hamster can make a burrow, also no bars means no bar biting. There are also cages on the market which have a deep base so that a deep layer of bedding doesn’t get pushed out through the bars. An enclosure should meet the minimum requirements of 100cm x 50cm. Research shows that this minimum recommended cage size is for ALL species of hamsters including dwarf. Our page about hamster cages has 27 recommended cages/tanks which are 100cm+.
Top Tip: Many hamster keepers choose to convert furniture items into a hamster cage. It’s often a far better way to spend your money then paying a similar price for a smaller cage. Instruction videos for converting furniture items from IKEA can be found on our hamster cage page. For inspiration see our amazing setups page.