Meriones unguiculatus
Mongolian Gerbil
Gerbils are lively desert rodents that spend most of their time digging elaborate tunnel systems. A deep, dry substrate matters as much as floor space for their wellbeing.
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At a glance
- Scientific name
- Meriones unguiculatus
- Family
- Muridae
- Origin
- Steppe and desert regions of Mongolia and northern China
- Lifespan
- 2–4 years
- Adult size
- 10–12 cm body length, plus a long tail
- Weight
- 60–130 g
- Temperament
- Curious, active and generally not prone to biting when tamed young
- Activity level
- High, especially at dawn and dusk
- Social needs
- High; keep in same-sex pairs or small groups from the same litter
- Intelligence
- Good spatial memory for tunnel systems and food caches
- Noise
- Very quiet; occasional foot-drumming
Housing and environment
- Housing
- Deep tank or gerbilarium with at least 20 cm of substrate for tunnelling, ideally 30 cm or more
- Space requirement
- Minimum 100 x 50 cm floor area for a pair, with substrate depth prioritised
- Temperature
- 18–24°C
- Humidity
- Low to moderate; gerbils are adapted to dry climates and suffer in damp housing
- Exercise
- Digging, tunnelling and an exercise wheel with a solid surface
- Grooming
- Self-grooming plus a dust bath area with chinchilla sand
Life stages and changing needs
Expanded care guidance · Updated 7 October 2026 · Not professionally reviewed
Young animals and settling in
Gerbils are highly social desert rodents that should never be kept alone; littermate pairs or small same-sex groups established young are the most stable, since introducing unfamiliar adults often ends in serious fighting. Young gerbils need a secure glass tank or deep-based enclosure rather than a barred cage with a shallow tray, because their natural behaviour is to dig tunnel systems, and they will simply kick shallow bedding out. Handle youngsters gently and briefly each day so they grow up confident, and never pick a gerbil up by the tail, which can deglove and permanently injure it.
Adult care
Adult gerbils are active, inquisitive and largely diurnal-with-naps, so they need daily opportunities to dig, chew and explore. Provide at least 20 centimetres, ideally 30 or more, of deep, dust-free paper or hemp bedding mixed with hay so tunnels hold their shape, plus cardboard tubes and untreated wood for constant chewing, since their teeth grow throughout life. Watch established pairs for sudden aggression, which can appear even after months of harmony, and be prepared to separate permanently if blood is drawn; a split-tank introduction is the only safe way to bond new adults.
Later life
Gerbils typically live two to four years, and older animals slow down, sleep more and may lose condition despite eating. Keep the burrow area warm and draught-free, make sure food and water remain easy to reach from the sleeping nest, and check teeth regularly, since overgrown or misaligned incisors are a common reason an older gerbil stops eating. Weight loss, a hunched posture or a gerbil sitting separately from its partner are early signs that something is wrong and justify a prompt vet visit rather than watchful waiting.
Diet and feeding
Seed and grain mix formulated for gerbils, plus fresh vegetables in small amounts
Feed a good-quality gerbil or rodent mix based on seeds and grains, supplemented with small amounts of fresh vegetables such as carrot or broccoli a few times a week; gerbils are desert-adapted and need surprisingly little water-rich food, and too much fresh produce causes diarrhoea. Scatter-feeding part of the ration around the enclosure encourages natural foraging and keeps pairs busy.
Avoid sugary treats, chocolate, and large amounts of sunflower seeds or peanuts, which are fatty and quickly produce overweight, selectively-feeding gerbils; offer hay and safe wooden chews to support constant tooth wear. Fresh water must always be available in a bottle, and although gerbils drink little compared with other rodents, a blocked sipper can still dehydrate them, so check it daily.
Daily care and ongoing checks
Every day
Check water, food and that the enclosure lid is fully secure — gerbils are accomplished escapers and chewers. Look for both animals moving about, grooming and interacting normally, since a gerbil sitting alone and fluffed up is often the first visible sign of illness.
Regular maintenance and prevention
Top up or refresh burrowing material regularly and spot-clean soiled areas, but avoid stripping the whole enclosure too often, because complete cleaning destroys the scent landscape and can trigger stress and fighting in established pairs; partial cleans every week or two with a full clean roughly monthly suits most setups.
Behaviour and compatibility
Extensive tunnel digging, foot-thumping when alarmed, hoarding food
- With children
- Suitable for supervised gentle handling by older children
- With other animals
- Keep apart from all other pets, including other rodent species
- Training difficulty
- Low to moderate; tames well with regular handling from a young age
Health
- Tail degloving if grabbed by the tail
- Seizures in some lines
- Overgrown teeth
- Tumours in older age
Find a small-mammal vet in advance; exotic vet availability varies by region
Special care requirements
Never lift a gerbil by its tail — the skin can deglove permanently
Burrowing social needs and desert-adapted care
Gerbils are highly social, burrow-dwelling rodents that thrive in stable pairs or small same-sex groups in deep, diggable bedding; they should rarely be kept alone. Their diet must reflect their desert origins, focusing on fibrous seeds and grains while avoiding high-fat or sugary human treats.
Before you take one on
Sources and further guidance
These welfare and veterinary resources inform general husbandry advice; they do not certify this profile or replace a species-experienced professional. Confirm exact environmental settings and feeding plans for your animal.
Can your home meet mongolian gerbil needs?
- Plan for a lifespan of 2–4 years, including holiday cover and, where one is available, a vet familiar with this species. Lifespan ranges are not guarantees.
- Arrange the social setting before arrival. Social guidance for this species: High; keep in same-sex pairs or small groups from the same litter. Do not assume another animal of any species is a suitable companion.
- Habitat priority for this species: Minimum 100 x 50 cm floor area for a pair, with substrate depth prioritised. Make sure your setup can provide this consistently. Check the room stays within the listed temperature range with a thermometer rather than judging by feel.
- Key care point: Never lift a gerbil by its tail — the skin can deglove permanently. Discuss diet and any specialist needs with the supplier, rescue and a vet who treats this species, and check local legal requirements before acquiring an animal.
Educational reference, not an individual diagnosis or a verified professional review. Read our editorial policy.
Guidance libraries and further reading
These organisations publish relevant guidance. Their links are further reading, not evidence that they have reviewed this page.