Hamster Care Guide

Not all hamsters have the same needs, so knowing what species you’re getting matters before you buy anything else. There are five species commonly kept as pets, and they fall into two groups: Syrians and dwarfs.

Syrian hamsters (sometimes called “teddy bear” or “golden” hamsters) are the largest pet hamster species. Adults typically reach 6 to 7 inches long. They need more space, a larger wheel (10 to 12 inches), and generally more food than dwarf breeds. Syrians are a good choice for first-time owners because they’re easier to handle and less likely to nip.

There are four dwarf species (not counting hybrid dwarf hamsters). They’re all significantly smaller than Syrians, usually around 3 to 4 inches as adults.

Your hamster’s breed affects the size of enclosure, wheel, and bar spacing you need. If you’re not sure what species you have, a good starting point is to check out our guide to different types of hamsters. If you think you might have a hybrid, we also have a guide to hybrid dwarf hamsters.

Similar in size to Campbell’s but stockier. Winter Whites get their name from their ability to change coat color in winter (though this doesn’t always happen in captivity). They tend to be a bit calmer than Campbell’s.

The smallest and fastest pet hamster species. Robos are incredibly active and entertaining to watch, but they’re not great for handling. They’re more of a “look but don’t touch” pet, which makes them a poor choice for kids or anyone who wants to cuddle their hamster.

Where to Get a Hamster

We strongly recommend adopting your hamster from a rescue or an ethical breeder rather than buying from a pet store.

Chain pet stores source their animals from large-scale breeding facilities where the animals are often kept in poor conditions. Hamsters from these situations tend to be harder to tame, more prone to health issues, and frequently mis-sexed, which can lead to surprise litters. The staff at pet stores are rarely trained in hamster care and may give you inaccurate advice about housing, diet, and whether hamsters can live together.

Rescues and ethical breeders are more likely to know the hamster’s age, sex, species, and temperament. A good breeder handles their hamsters from a young age, which makes bonding much easier. A rescue gives a hamster a second chance at a good home.

We maintain a database of small pet rescues across the US that work with hamsters, gerbils, and mice. Start there. If there isn’t a rescue near you, look for local breeders in hamster communities on Reddit, Facebook, or forums.

For more on why we feel strongly about this, read our article on why you shouldn’t buy a small pet from a pet store.

Hamsters must live alone. This includes dwarf breeds.

A lot of pet websites and pet store employees will tell you that dwarf hamsters can be kept in pairs or small groups. This is not true in a home environment. In the wild, hamsters live in loose colonies where they mostly keep to themselves, coming together to mate or fight over territory. Captivity doesn’t change that instinct.

Hamsters housed together are likely to fight and injure one another, sometimes fatally. Even pairs that seem bonded can turn on each other suddenly. It’s not worth the risk.

Common mistake: Buying two dwarf hamsters because the pet store kept them together. Pet stores house animals in temporary conditions that don’t reflect what’s safe long-term. Always house hamsters individually.

A dwarf hamster needs a minimum of 600 square inches of unbroken floor space. A Syrian needs at least 775 square inches. These are minimums, and bigger is always better. Hamsters are active animals that cover a lot of ground at night, and a cramped enclosure leads to stress behaviors like bar chewing, excessive grooming, and aggression.

You have a few good options:

• Glass tanks: A 40-gallon breeder tank (36″ x 18″) works well for dwarf hamsters. For Syrians, consider a 75-gallon tank or larger. Tanks hold bedding well and prevent escapes, but they’re heavy and need a mesh lid for ventilation.
• Large enclosures: I use a PawHut enclosure for my hybrid dwarf hamster. It provided plenty of floor space and was easier to access than a tank for cleaning and interaction.
• Bin cages: A large plastic storage bin (105+ quart) with a ventilated lid is an affordable option. You’ll need to cut out sections of the lid and attach hardware cloth for airflow.
• Wire cages: Can work if the floor space is large enough, but the bottom tray needs to be at least 5 to 6 inches deep for bedding. For dwarf hamsters, bar spacing must be 1/4 inch or less or they will escape.

The enclosure also needs to be deep enough for burrowing. Hamsters are natural burrowers, and they need at least 6 inches of bedding (more on that in the bedding section).

Common mistake: Trusting the packaging. If a cage says “hamster cage” on the box, it’s almost certainly too small. Measure the floor space yourself and do the math.

For a full breakdown of enclosures we recommend (and ones to avoid), check out our guide to the best hamster cages and enclosures. We also have detailed reviews of the Prevue 528 and the Omlet Qute if you’re considering either of those.

The right bedding keeps your hamster warm, comfortable, and able to do what they’re hardwired to do: burrow.

Hamsters are burrowing animals. In the wild, they dig extensive tunnel systems underground. In captivity, deep bedding is one of the most important things you can provide. Aim for at least 6 inches of bedding across most of the enclosure, and ideally 8 to 10 inches in at least one area so your hamster can build proper burrows.

Safe bedding options:

• Paper-based bedding (like Kaytee Clean & Cozy or Small Pet Select) is the most popular choice. It’s soft, absorbent, and holds tunnels well when packed.
• Aspen shavings are another safe option. They don’t hold burrows as well as paper bedding on their own, but mixing aspen with paper bedding creates a sturdy burrowing substrate.
• Hay (Timothy or orchard grass) can be layered on top of or mixed with paper bedding to help tunnels hold their shape.

Common mistake: Using cedar or pine shavings. Cedar is toxic to hamsters. Untreated pine contains phenols that can cause respiratory problems. Kiln-dried pine is considered safer, but paper-based bedding or aspen are better choices overall.

Also avoid scented bedding, cotton-based “fluffy” nesting material (it can wrap around limbs and cause injury), and corn cob bedding (it molds quickly and doesn’t support burrowing).

We tested and compared the most common options in our best hamster bedding guide.

A safe, properly sized wheel is non-negotiable. Most wheels sold for hamsters are too small.

Hamsters can run several miles per night, and a wheel gives them the outlet they need for that energy. Without one, you’ll likely see stress behaviors: bar chewing, pacing, and attempts to escape.

Sizing

The wheel needs to be large enough that your hamster’s back doesn’t arch while running. If their back bends, the wheel is too small, and running on it can cause spinal problems over time.

• Dwarf hamsters: 8 inches minimum, though many do better on a 10-inch wheel
• Syrian hamsters: 10 inches minimum, ideally 12 inches

Surface

The running surface must be solid. Wire mesh wheels and barred wheels can catch toes and cause injuries ranging from bumblefoot to broken limbs. Look for wheels with a solid plastic or wood running surface.

Common mistake: Buying the small, colorful wire wheels that come bundled with hamster “starter kits.” These are almost always too small and made of unsafe materials. Toss it and buy a proper wheel separately.

For our recommendations on specific wheels, including sizing by breed, see our best hamster wheels guide.

Hamsters need places to hide, things to chew, and variety in their environment to stay mentally healthy.

Hides

Provide at least two or three hideouts in the enclosure. Hamsters feel vulnerable in open space, and multiple hides give them options for where to sleep, stash food, and retreat when they’re stressed. These don’t need to be fancy. A toilet paper roll, a small ceramic flower pot on its side, a coffee mug, or a small wooden house all work fine.

Chew toys

Hamster teeth grow continuously throughout their life. Without things to chew, their teeth can become overgrown and cause serious health issues. Provide apple wood sticks, untreated wood blocks, willow sticks, or other small-animal-safe chew toys. Timothy hay also doubles as a chew material, nesting material, and a snack.

Enrichment

Rotate toys and rearrange the enclosure layout every few weeks to keep things interesting. You can create foraging opportunities by scattering food through the bedding instead of (or in addition to) using a bowl. Cork logs, wooden bridges, and platforms at different levels add complexity to the habitat.

The goal is variety in shapes, textures, and materials. A hamster with nothing to do is a stressed hamster.

Hamsters don’t need water baths, and you should never bathe your hamster in water. But many hamsters love a sand bath for grooming and just digging around in.

Place a shallow dish or container of small-animal-safe sand in the enclosure. Reptile sand (calcium-free) or chinchilla bathing sand both work. Do not use chinchilla bathing dust, as the particles are too fine and can cause respiratory problems.

Some hamsters will use the sand bath to roll around and clean their coat. Others will just dig in it for fun. Either way, it’s a good enrichment option. Change the sand regularly, especially if your hamster decides to use it as a bathroom.

For dwarf hamsters, a popular approach is to cover about one-third of the enclosure floor with sand substrate. This gives them a dedicated digging zone and helps keep their coat clean and oil-free.

Spot-clean daily by removing any visibly soiled bedding, droppings, and uneaten fresh food. Wipe down the wheel and any surfaces that need it.

A full bedding change should happen about once a month, but don’t replace all of the bedding at once. Remove about a third of the bedding, replace it with fresh substrate, and mix it together. This preserves your hamster’s scent in the enclosure, which is important for their sense of security. Stripping out all the bedding at once can be very stressful and will destroy any tunnels your hamster has built.

Hamsters are omnivores, not herbivores. They need more protein than a lot of owners expect.

In the wild, hamsters eat a mix of grasses, seeds, grains, and insects. A good captive diet should mirror that variety. Look for a food mix with 15% to 20% protein content.

What to Feed

The approach most experienced hamster owners use is a combination of a quality seed mix and a protein-rich pellet:

• Seed mix: Higgins Sunburst or RobinsGourmet Species-Specific Seed Mix are both solid options
• Pellet: Teklad 2018 Rat Food Pellets provide consistent protein and nutrients that a seed mix alone might not cover

Some owners prefer a seed-mix-only approach. If you go this route, watch to make sure your hamster is eating all parts of the mix and not just picking out their favorites. Selective eating leads to nutritional gaps.

Common mistake: Feeding an all-seed diet with no protein supplementation, or using a low-quality “hamster food” from the pet store that’s mostly filler. Check the protein percentage on the label.

For a deeper dive into hamster nutrition, see our guide on what to feed a hamster, and for specific product picks, check out our best food for hamsters guide.

Fresh Foods and Treats

Hamsters can eat small amounts of fresh vegetables (broccoli, cucumber, carrot), certain fruits (in moderation due to sugar), and protein sources like plain cooked chicken, boiled egg, or mealworms. Treats should be a small part of the diet, not the foundation.

Water

Fresh water should be available 24/7. You can use a water bottle attached to the enclosure or a small, stable water dish. Some hamsters prefer one over the other. If you use a bottle, check daily that it’s dispensing properly since the ball mechanism can stick.

Pet hamsters are nocturnal. Some sources say crepuscular (active at dawn and dusk), and wild hamsters are, but most pet hamsters are fully active at night and asleep during the day.

This means two things for you as an owner:

1. Don’t wake your hamster during the day. Repeatedly disrupting their sleep causes chronic stress. Wait until evening to interact with them.
2. Expect noise at night. A hamster running on a wheel at 2 AM is normal. If the sound bothers you, place the enclosure in a room where you don’t sleep, and invest in a quiet wheel.

Your hamster’s enclosure should be in a room that’s reasonably quiet during the day and doesn’t get direct sunlight that could overheat the habitat.

For more on hamster sleep patterns, see our article on whether hamsters are nocturnal.

Taming a hamster takes patience. Some hamsters warm up in a few days, others take weeks, and some never become fully comfortable with handling.

Bonding with Your Hamster

Start by letting your hamster settle into their enclosure for a few days without trying to pick them up. Then begin by placing your hand in the enclosure and letting them come to you. Offer treats from your palm. Over time, they’ll associate your hand with good things.

Don’t reach in from above. Hamsters are prey animals, and a hand swooping down from above triggers their threat response. Approach from the side or scoop from below.

Some owners cover the enclosure with a light blanket for the first week to help their hamster feel more secure while they adjust to the new sights, sounds, and smells. This isn’t required, but if your hamster seems especially skittish or stressed after coming home, it can help.

Playtime

Once your hamster is comfortable being held, you can set up a playpen for supervised exploration outside the enclosure. A small pet playpen or a ring of cardboard boxes works fine. Sit inside the pen with your hamster so they can climb on you and explore at their own pace.

Realistic Expectations

It’s also worth being realistic: some hamsters will never be fully comfortable being held. That’s OK. Hamsters are prey animals, and some individuals are simply wired to be more cautious. You can still build a good relationship with a hamster that doesn’t enjoy handling by sitting near their enclosure, offering treats through the bars, and watching them explore during their active hours. Don’t take it personally, and don’t force it.

No Hamster Balls

Do not use a hamster ball for free-roaming. Hamster balls are stressful and dangerous. Your hamster can’t control where they’re going, their toes can get caught in the air slits, and they have no access to water. A playpen is safer and more enriching in every way.

For more on this, see our article on why hamster balls aren’t safe.

Hamsters live 2 to 3 years on average. Roborovski hamsters sometimes reach 3 to 3.5 years. Syrians and dwarfs typically live closer to 2 to 2.5 years.

Hamsters are prey animals, which means they instinctively hide signs of illness. By the time you notice something is wrong, the problem may already be serious. Knowing what to watch for can make the difference between catching something early and missing it entirely.

Signs of Illness in Hamsters

• Wet tail: Diarrhea causing a wet, soiled area around the tail. This is a medical emergency, especially in young hamsters. It can be fatal within 48 hours without treatment.
• Lethargy or unusual stillness: A hamster that’s not moving much during their normal active hours may be sick.
• Loss of appetite or sudden weight loss
• Labored breathing, sneezing, or discharge from the nose or eyes: Could indicate a respiratory infection.
• Hair loss or skin irritation: Can signal mites, fungal infection, or allergies to bedding.
• Overgrown teeth or difficulty eating: Teeth that aren’t wearing down properly may need veterinary trimming.
• Lumps or swellings: Can be abscesses, tumors, or impacted cheek pouches.

Finding a Vet

Hamsters require an exotic vet, not a regular dog-and-cat vet. Exotic vets have specific training in small animal medicine. Find one in your area before you have an emergency, because not every vet clinic sees hamsters, and you don’t want to be searching for one at midnight when your hamster is sick.

The Association of Exotic Mammal Veterinarians has a find-a-vet directory that can help.

This guide is for informational purposes and is not a substitute for professional veterinary advice. If your hamster is showing signs of illness, consult an exotic vet.

• Best Hamster Cages and Enclosures
• Best Food for Hamsters
• Best Hamster Bedding
• Best Hamster Wheels for Dwarf Hamsters
• What to Feed a Hamster: Complete Nutrition Guide
• Baby Hamster Care: Week-by-Week Guide