After dogs and cats, hamsters rank pretty high on the list of popular pets in the US, and they’re pretty equally distributed from New York to California. Their popularity stems largely from their appeal as a kind of “starter” pet– they don’t live for decades, don’t need tons of attention and maintenance, and don’t take up a lot of room.
A hamster cage measuring 450 sq in (2903.22 sq cm) should be the absolute minimum for your hamster, and depending on the breed of your hamster, that may be too small. If you live abroad, the recommended minimum size is even bigger, but in the US, 450 sq in (2903.22 sq cm) is the accepted minimum.
There are many options to consider aside from the size of the cage. Let’s look at some of those and how you might decide what’s suitable for you and your hamster.
Cage Sizes
Several layouts can meet the 450 square inches (2903.22 square cm) minimum, but experts recommend a rectangular shape instead of a square. Rectangular cages mean a longer stretch of the floor for the hamster to travel, and the critters don’t mind living in a narrower space.
A 450 square inch (2903.22 square cm) cage is a little more than three square feet (0.27 square meter), or a 1′ x 3′ (0.3 x 0.91 meter) cage. However, as a square, this cage size would present the hamster 1.73 feet (0.52 meter) of width and length.
While the non-US-based National Hamster Council recommends the largest cage possible, the California Hamster Association sets the minimum at 450 square inches (2903.22 square cm). That doesn’t mean you have to stick strictly to that size, of course. These are simply guidelines from different parts of the world.
Of course, this minimum has some caveats with it. If you have a small hamster (and only one), 450 square inches (2903.22 square cm) works.
However, some hamster breeds are larger than others, and you shouldn’t cram multiple hamsters into the minimum space recommended for one animal.
Read How To Keep a Hamster Cage From Smelling
Hamster Breeds
While the smaller breeds like the dwarf hamsters are most commonly kept pet hamsters, there are several other breeds, including:
- Allocricetulus
- Campbell’s Russian dwarf hamster
- Chinese hamster
- Chinese striped hamster
- Cricetulus
- European hamster
- Gansu hamster
- Syrian golden hamster
- Greater long-tailed hamster
- Grey dwarf hamster
- Mesocricetus
- Roborovski dwarf hamster
- Winter white dwarf hamster
Each has its distinct features, but the main breeds kept as pets are:
- The Syrian golden hamster
- The Chinese hamster
- Campbell’s Russian dwarf hamster
- The winter white dwarf hamster
- The Roborovski dwarf hamster
The Syrian golden hamster grows to be between five and nine inches (12.7 and 22.86 cm) long and weighs up to five ounces (141.75 g). It will live between two and four years.
The Chinese hamster isn’t a dwarf hamster, but you wouldn’t know by looking at its two-ounce (56.69-g) body. They can live up to three years and grow as long as five inches (12.7 cm).
A Campbell’s Russian dwarf hamster can live up to three years and weigh as little as one to two ounces (28.34 to 56.69 g). They will not grow longer than four inches (10.16 cm).
The winter white dwarf hamster is another tiny guy who will only weigh up to two ounces (56.69 g). Living as long as three years, the winter white dwarf hamster will grow to about four inches (10.16 cm).
The Roborovski dwarf hamster is the smallest of this group, tipping the scales at a measly one ounce and reaching two inches (5.08 cm) in length. They can live up to four years.
Thinking about the lengths of the pet hamster breeds, you can see that they benefit from areas that, to them, are large expanses. If you were two inches long and lived in a space 18 times as long as you, you’d hardly feel claustrophobic.
Read How Much Does a Hamster Cage Cost?
Continuous Space
It’s worth noting that hamsters need at least 450 square inches (2903.22 square cm) of uninterrupted space. They need to be able to run around and play— you know, hamster stuff.
What some hamster owners do incorrectly is buy up some habitrail modules and make an extensive layout of tubes to rival New York City’s subway system for the hamsters to explore.
One example of these kinds of modules is the GNB Pet Hamster Tunnel and Playground (available on Amazon.com). It comes with 94 pieces and is relatively inexpensive.
It can make a nice addition to any hamster cage; however, it shouldn’t be your primary way of “adding space” to the cage. The enclosure itself should meet the minimum requirements for size without all the extras.
Here’s a YouTube video about Habitrail OVO Cage Tour:
Again, I’d like to reiterate that your hamster may love scurrying around in those things, but they do not provide continuous space. Therefore, if you have those tunnels and things, they don’t count toward the 450 square inches (2903.22 square cm) of uninterrupted space.
But if you have the space to have an adequately sized enclosure to which you attach tunnels and other fun areas for your little friend, more power to you.
Read How Big Should a Hamster Cage Be?
Types of Enclosures
There are three main types of hamster cages, though one could argue that just about any secure box could work. However, most of us want to be able to see our hamsters and maybe even get them out to play with them. And no matter what kind of enclosure you choose, it’s got to have proper ventilation.
Wire Cage
Perhaps the most common hamster habitat, the wire cage is relatively inexpensive and indestructible. It allows for excellent airflow, which is great unless your home is unusually hot or cold. In colder times of the year, airflow could make your pet so cold that he goes into hibernation.
Another issue with wire cages is the potential for injury. Wire cages allow a hamster to stick its leg through the wire, and that can result in broken bones if he feels stuck, panics, and tries to jerk his leg back out.
Many wire cage manufacturers add a plastic coating to the wire for aesthetics, but since hamsters chew all the time, they face the real possibility of chipping off some of that coating and swallowing or choking on it.
Finally, a wire cage offers the hamster a possibility for escape. Hamsters are intelligent, and given enough time, most of them will figure a way to warp some wires and squeeze out of the cage. At best, you’ll spend time searching for your friend. At worst, your cat will have had hamster sushi before you know the little fella escaped.
Modular Cage
Modular cages are plastic, and we already mentioned them earlier when we talked about Habitrails and similar products. These systems can help recreate a hamster’s natural habitat, as they do spend time in dens and might choose one of the small modules to use in the same way. However, you should still have the recommended amount of uninterrupted space.
One downside to modular cages is ventilation. If your hamster lives in many enclosed spaces as opposed to one, he’s still in an enclosed space. Modular cages can have low airflow and can overheat fairly easily.
A solution would be to have some of the modules be wire enclosures— maybe every third area off of a tunnel is wire. A setup like that would allow for air circulation and heat discharge.
Read Why Is My Hamster Biting the Cage
Vivarium (Aka an Aquarium With No Fish or Water)
It could be a great (and inexpensive) solution if you’ve got an old aquarium lying around. Glass cages are practically escape-proof, as there’s almost no chance your little furball will ever chew through tempered glass. You’ll be able to see and monitor him and watch what he’s doing.
But the lack of airflow can be a problem. No air blows through the glass, so your hamster can get hot down in there, not to mention the respiratory issues that can result from breathing ammonia fumes when hamster urine breaks down. If you have a glass cage, you’ll have to clean it regularly.
A good solution might be a wire top to the vivarium with holes for attaching tubes. This will expand the little guy’s house and give him a place to go if it gets too warm or urine-y.
Some hamster owners combine glass and wire cages so that there’s a glass tank on the bottom (great for colder days) and a wire cage on top (for when the hamster wants to get up and get some fresh or cooled air).
Whichever you choose will depend on your available space, how much time you plan to spend maintaining the cage, and you