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Cairo spiny mouse (Acomys cahirinus)

Cairo spiny mouse (Acomys cahirinus) in a terrarium

Small mammals · Difficulty: Intermediate

Key facts and care guidance for Cairo spiny mouse (Acomys cahirinus) (origin: Dry rocky slopes, wadis and settlements in north-east Africa (Egypt, Libya, Sudan to Somalia). Many pet stocks are not reliably identified; some are the closely related Arabian spiny mouse (A. dimidiatus).). Adult size around Head-body 8–13 cm, tail about as long; 30–70 g.. Life expectancy Usually 3–5 years in human care, some live longer.. The values below are carefully researched guidance.

Short answers

Cairo spiny mouse: How big does the enclosure need to be?

From 100×50×80 cm (for 3–5 animals; no official standard for spiny mice – derived from TVT leaflet no. 158 'Mice' with 80×50×80 cm and enlarged because spiny mice are bigger and climb a lot; more space is clearly better). Well-ventilated terrarium or rodent enclosure with mesh top, structured like rocks with stone piles, cork tubes, branches and several caves; large solid wheel (from 28 cm).

Cairo spiny mouse: What temperature does it need?

Daytime 20–26 °C room temperature; spiny mice like warmth and are sensitive to cool, damp air – not below 18 °C., at night Not below 18 °C at night.

Cairo spiny mouse: Does it need UVB lighting?

UVB: Not needed – bright daylight in the room is enough.

Cairo spiny mouse: How long do they live?

Life expectancy: Usually 3–5 years in human care, some live longer.

Cairo spiny mouse: Is it suitable for beginners?

Rather not – it is considered an intermediate species (difficulty: Intermediate).

Climate

Daytime temperature
20–26 °C room temperature; spiny mice like warmth and are sensitive to cool, damp air – not below 18 °C.
Night temperature
Not below 18 °C at night.
Humidity
30–50 % (dry room air; strictly avoid wet and damp conditions)
UVB
Not needed – bright daylight in the room is enough.

Enclosure

Minimum size
from 100×50×80 cm (for 3–5 animals; no official standard for spiny mice – derived from TVT leaflet no. 158 'Mice' with 80×50×80 cm and enlarged because spiny mice are bigger and climb a lot; more space is clearly better). Well-ventilated terrarium or rodent enclosure with mesh top, structured like rocks with stone piles, cork tubes, branches and several caves; large solid wheel (from 28 cm).
Substrate
10–15 cm of small-animal bedding or wood shavings with hay, with a sand-loam area in one spot; hay and kitchen paper as nesting material. Place stones firmly on the floor so nothing can be undermined.

Feeding

Food
Low-fat seed mix (budgie/mouse mix, few sunflower seeds), grasses, herbs and some vegetables; insects several times a week as protein. Avoid sugary and fatty treats and lots of fruit – spiny mice are prone to diabetes and obesity. Hay, gnawing twigs and water in a bowl.
Feeding interval
Once a day in the late afternoon or evening; scattering food in the bedding is good enrichment.

Key facts

Adult size
Head-body 8–13 cm, tail about as long; 30–70 g.
Life expectancy
Usually 3–5 years in human care, some live longer.
Origin
Dry rocky slopes, wadis and settlements in north-east Africa (Egypt, Libya, Sudan to Somalia). Many pet stocks are not reliably identified; some are the closely related Arabian spiny mouse (A. dimidiatus).
Protection status
Not protected: not on the EU invasive species list, not in the German BArtSchV, the EU wildlife trade regulation or CITES. Keeping is allowed without papers.
Brumation
None – keep warm and dry all year.
Cohabitation
Group. Very social; least stressful are female groups or one male with several females (then plan for young or have the male neutered). Several males often fight. Group members even help each other with birth and rearing.

Notes

Special feature: the skin tears very easily when grabbed, and the tail can lose its skin when held and does not regrow. On the other hand skin wounds heal remarkably well, which is why spiny mice are used in regeneration research. Several Acomys species are sold as 'spiny mouse'; their care is practically identical.

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Related species

All species in the care wiki →

What you need to start

To keep Cairo spiny mouse (Acomys cahirinus) you typically need: a suitable enclosure (from 100×50×80 cm (for 3–5 animals; no official standard for spiny mice – derived from TVT leaflet no. 158 'Mice' with 80×50×80 cm and enlarged because spiny mice are bigger and climb a lot; more space is clearly better). Well-ventilated terrarium or rodent enclosure with mesh top, structured like rocks with stone piles, cork tubes, branches and several caves; large solid wheel (from 28 cm).), substrate (10–15 cm of small-animal bedding or wood shavings with hay, with a sand-loam area in one spot; hay and kitchen paper as nesting material. Place stones firmly on the floor so nothing can be undermined.), a heat source with a thermostat, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.

The complete, interactive care database is in the Reptoria app.

Last updated: 30 October 2026 · Editor: Reptoria editorial team · Sources include: University of South Florida, SOP 405.4 „Spiny Mice (Acomys spp.) Husbandry“ (rev. 09/2024) – sehr reißfeste Haut, nie am Schwanz greifen, mindestens paarweise, Diabetesneigung, Zuchtgruppen 1 Männchen + 3–4 Weibchen – https://usf.edu/research-innovation/research-support/comparative-medicine/documents/sops/s405-spiny-mice-husbandry.pdf, University of South Florida, SOP 405.4 – Diabetesneigung, zucker- und fettreiches Futter begrenzen – https://usf.edu/research-innovation/research-support/comparative-medicine/documents/sops/s405-spiny-mice-husbandry.pdf, Wikipedia „Spiny mouse“ – Heimtier, nie am Schwanz heben, Hautablösung und Regeneration, ~27 °C bevorzugt, sozial, Übergewicht; Tragzeit 38–42 Tage, Lebensdauer 4–7 Jahre – https://en.wikipedia.org/wiki/Spiny_mouse, Wikipedia „Ägyptische Stachelmaus“ – Verbreitung, felsige Lebensräume, Größe 75–138 mm, 21–64 g, Allesfresser – https://de.wikipedia.org/wiki/%C3%84gyptische_Stachelmaus, Durchführungsverordnung (EU) 2025/1422 – Unionsliste, keine Acomys-Art – https://umwelt-online.de/recht/eu/25c/25c_1422.htm

All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).