Importance Of Bedding Depth For Hamsters

Why Bedding Depth Matters for Hamsters

More Than Just Somewhere to Sleep

When people think of hamsters, they often picture them running on a wheel or stuffing their cheeks with food. In reality, wild hamsters spend much of their lives underground.

A hamster's burrow is far more than a tunnel. It's a carefully organised home, with separate areas for sleeping, storing food, toileting and sheltering from predators and changing temperatures.

Although our pet hamsters have lived alongside humans for generations, these instincts haven't disappeared. Every hamster still has a natural desire to dig, tunnel and build a secure underground home.

Providing enough bedding to make this possible isn't simply enrichment - it's one of the foundations of good hamster welfare.

Why Do Hamsters Burrow?

Burrowing allows hamsters to carry out many of the behaviours they have evolved to perform.

A well-built burrow allows a hamster to:

• Build a safe, comfortable sleeping nest.

• Store food for later.

• Create a separate toilet area.

• Stay cool in warm weather and warm in cooler temperatures.

• Hide from anything they perceive as dangerous.

• Rear young safely in the wild.

Even after generations in captivity, pet hamsters continue to show these behaviours whenever they're given the opportunity. Many will spend hours every night extending tunnels, moving bedding and redesigning their underground home.

Why Bedding Depth Matters

Without enough bedding, a hamster simply can't build the kind of burrow it naturally wants to create.

Instead of constructing stable tunnels and underground chambers, they're often limited to digging shallow scrapes that quickly collapse. This restricts one of their most important natural behaviours.

Research has consistently shown that deeper bedding allows hamsters to build more complex burrow systems and is associated with improved welfare. Studies have also found reductions in abnormal repetitive behaviours, such as wire gnawing, when hamsters are provided with environments that better support natural behaviour.

Bedding depth isn't the only factor that affects welfare, but it's one of the simplest improvements most owners can make.

How Much Bedding Should You Provide?

At Fable's, we recommend providing at least 25 cm (10 inches) of compacted, burrow-supporting bedding across as much of the enclosure as possible.

We consider this a practical minimum, not the goal!

Experimental research has shown that hamsters given even deeper bedding, particularly around 40 cm or more, are able to build more complete burrow systems. If your enclosure allows it, providing 30-40 cm or even deeper gives your hamster even greater opportunities to express natural behaviour.

A few tips:

• Measure bedding after gently compressing it.

• Aim to provide the full depth across most of the enclosure, rather than limiting deep bedding to one corner.

• Support heavy accessories such as wheels, platforms and hides on stilts or raised platforms so they remain stable without reducing your hamster's digging space.

The simple rule is: The more safe, burrow-supporting bedding you can provide, the better.

Choosing the Right Bedding

Depth is only part of the picture. The bedding itself also needs to support burrowing.

A suitable bedding should be:

✔ Dust extracted

✔ Unscented

✔ Able to hold tunnels without collapsing

✔ Free from sharp materials

✔ Safe if accidentally ingested in small amounts

Paper-based bedding is widely regarded as one of the best options because it forms stable burrows. Aspen and hemp bedding can also work well, particularly when mixed with paper bedding.

Avoid pine, cedar, unspecified softwoods and strongly scented beddings, as these may irritate the respiratory system or overwhelm a hamster's highly sensitive sense of smell.

Remember: 25 cm of bedding that collapses isn't nearly as useful as 25 cm of bedding that supports a stable burrow.

For recommendations on safe bedding types you can use, check out our Product Library.

Signs Your Hamster May Need More Bedding

Every hamster is different, and these behaviours can have several causes. However, limited bedding may contribute to:

• Bar biting

• Climbing enclosure bars ("monkey barring")

• Repeated escape attempts

• Constant digging at enclosure corners

• Repetitive pacing

• Excessive chewing of cage furnishings

Always consider bedding depth alongside enclosure size, wheel size, enrichment and opportunities to forage.

Cleaning Without Destroying Their Home

To a hamster, a burrow isn't simply somewhere to sleep - it's their home.

Hamsters rely heavily on familiar scent cues to recognise their environment. Completely replacing all of the bedding removes those familiar smells and can make an otherwise safe enclosure feel unfamiliar.

Instead:

• Spot-clean toilet areas regularly.

• Remove only wet or dirty bedding.

• Clean accessories individually when needed.

• During larger cleans, keep most of the existing bedding and replace only what is necessary.

This approach keeps the enclosure hygienic while minimising unnecessary disruption.

Common Myths

"My hamster doesn't burrow."

Many hamsters have simply never been given enough bedding to build proper tunnels. Once deeper substrate is provided, owners are often surprised by how quickly burrows begin to appear.

"Deep bedding is harder to clean."

In reality, many hamsters choose one main toilet area, making regular spot cleaning straightforward while leaving the rest of the enclosure undisturbed.

"Ten inches is loads of bedding."

Ten inches should be viewed as the starting point rather than the finish line. If your enclosure allows it, providing even deeper bedding gives your hamster more opportunities to express natural behaviour.

Why We Recommend This

At Fable's, every care recommendation is based on the best available evidence alongside our experience caring for rescued hamsters.

Research has shown that:

• Wild hamsters naturally construct complex underground burrow systems with dedicated nesting, food storage and toilet chambers.

• Deeper bedding allows pet hamsters to build more complete burrows and express more natural behaviours.

• Restrictive housing is associated with higher levels of abnormal repetitive behaviours such as wire gnawing.

• Familiar scent cues play an important role in helping hamsters feel secure after enclosure cleaning.

Together, this evidence supports providing deep, stable bedding as a key part of good hamster welfare.

Key Takeaways

🐹 Hamsters are natural burrowing animals.

📏 Provide at least 25 cm (10 inches) of compacted bedding throughout the enclosure.

🏡 More bedding is almost always better if your enclosure allows.

🌿 Choose dust-extracted, burrow-supporting bedding.

🧹 Spot clean regularly instead of replacing all of the bedding.

❤️ Supporting natural behaviours is one of the biggest improvements you can make to your hamster's welfare.

Evidence & References

The recommendations in this guide are informed by peer-reviewed scientific research, recognised animal welfare guidance and current understanding of hamster behaviour.

Source	What it supports
Hauzenberger, Gebhardt-Henrich & Steiger (2006)	Direct experimental evidence showing that deeper bedding allows Syrian hamsters to construct more complete burrow systems, while shallow bedding is associated with more wire gnawing and reduced behavioural opportunities.
Fox & Neville (2024)	Contemporary owner survey investigating welfare in companion Syrian hamsters. Highlights associations between husbandry, natural behaviour and owner-reported welfare outcomes.
Fischer, Gebhardt-Henrich & Steiger (2007)	Demonstrated that hamsters housed in appropriately sized enclosures showed fewer stereotypic behaviours, reinforcing the importance of housing that supports natural behaviour.
Gattermann et al. (2001)	Describes the natural ecology of wild Syrian hamsters, including their extensive underground burrow systems and natural behavioural repertoire.
Veillette & Reebs (2010)	Demonstrated the importance of familiar scent cues during enclosure cleaning, supporting spot cleaning and retaining clean nesting material where appropriate.
NC3Rs Housing & Husbandry Guidance (2021)	Evidence-based laboratory husbandry guidance recommending deep, burrow-supporting substrate, nesting material and cleaning practices that minimise disruption.
RSPCA Hamster Care Guidance	Recommends providing a deep layer of suitable bedding to allow digging and burrowing as part of good companion hamster welfare.

References

• Fischer, K., Gebhardt-Henrich, S.G. & Steiger, A. (2007). Behaviour of Golden Hamsters (Mesocricetus auratus) Kept in Four Different Cage Sizes. Animal Welfare, 16, 85-93.

• Fox, A. & Neville, V.M. (2024). Burrowing for Answers: Investigating Syrian Hamster Welfare Through Owner Surveys. Veterinary Record.

• Gattermann, R. et al. (2001). Notes on the Current Distribution and Ecology of Wild Golden Hamsters (Mesocricetus auratus). Journal of Zoology.

• Hauzenberger, A.R., Gebhardt-Henrich, S.G. & Steiger, A. (2006). The Influence of Bedding Depth on Behaviour in Golden Hamsters (Mesocricetus auratus). Applied Animal Behaviour Science, 100, 280-294.

• National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3Rs). (2021). Housing and Husbandry: Hamster.

• RSPCA. Creating a Good Home for Hamsters.

• Veillette, M. & Reebs, S.G. (2010). Preference of Syrian Hamsters to Nest in Old Versus New Bedding. Applied Animal Behaviour Science, 125, 189-194.

Last reviewed: July 2026

Next scheduled review: July 2027

This article is reviewed periodically to ensure it reflects current scientific evidence, recognised veterinary guidance and best-practice hamster welfare recommendations.