Ceratogyrus brachycephalus
Greater Horned Baboon - complete care guide
Greater Horned Baboon
Temperature
24-29 °C
Target ambient range
Humidity
50-60 %
Substrate / enclosure RH
Adult DLS
10-13 cm
Average - varies per individual
Moult interval
Sling 3-5w - Juv 1.5-2.5mo
Adult 8-12mo
Adult cycle = mature females; males never moult again after maturity
About
The Greater Horned Baboon - a jet-and-bronze African fossorial carrying the genus's signature foveal horn on its carapace, from arid Botswana-Zimbabwe scrubland. An enthusiastic digger that builds deep silk-lined shafts and ambushes from the burrow mouth; fast, defensive and packing potent Old World venom, so a look-don't-touch species. Hard core of the hobby caveat: some trade stock labelled brachycephalus may be C. sanderi or hybrids - buy from keepers who know their lines. Cheap, fast-growing CB slings make it a staple "first horned baboon".
Husbandry cheat sheet
- Origin
- Botswana / Zimbabwe / South Africa
- Habitat
- Arid savannah scrubland
- Temperament
- Defensive
- In your collection
- 0
Growth, lifespan & conservation
- Growth rate
- Fast
- Maturity
- ♀ 36mo ♂ 24mo
- Lifespan
- ♀ 15yr ♂ 4yr
- Continent
- Africa
- UK availability
- Commonly available
Care Guide
Ceratogyrus brachycephalus
Greater Horned Baboon - a complete husbandry sheet. Use as a starting point and adjust to your individual specimen.
What size enclosure does a Greater Horned Baboon Tarantula need?
Adults
25 × 25 cm footprint with 15-20 cm of substrate - depth matters more than floor space for fossorials.
Slings & Juveniles
Small tubs with 8-10 cm of substrate and a starter hole - they dig immediately.
To map exact floor space and substrate safety limits for your setup, use our free interactive tarantula enclosure planner.
What temperature and humidity does a Greater Horned Baboon Tarantula need?
Heating
The Greater Horned Baboons is comfortable at 24-29 °C. UK homes need supplementary warmth for most of the year; warm the room, never a mat under the tank.
Humidity
50-60 %: keep the substrate dry, overflow the water dish occasionally, and let it dry back. Arid-adapted through and through.
Ventilation
Cross-ventilation with a dry setup - arid species rot in stagnant humidity.
What substrate is best for a Greater Horned Baboon Tarantula?
Recommended Mixes
Depth
15-20 cm
Notes
Deep and packed firm (a soil/sand mix holds burrow structure best). Dry to the touch with a slight moisture gradient at the very bottom.
How do you set up a Greater Horned Baboon Tarantula enclosure?
Décor
The Hide
The burrow IS the hide - give 15 cm+ of packed substrate and a starter hole; it will excavate a deep shaft with a silk collar.
Water
Always provide a shallow water dish at surface level - it drinks during night patrols.
Lighting
No special lighting needed. Ambient room light is enough.
How often should you feed a Greater Horned Baboon Tarantula?
Good Feeders
Long refusal worrying you? Separate premoult fasting from genuine problems with our "Is my T okay?" checker.
Is my Greater Horned Baboon Tarantula dying or moulting?
Pre-moult signs to look for
Refusing food for weeks is normal before a moult - a healthy Greater Horned Baboon Tarantula fasting is almost never an emergency in itself. Watch for slowing down and spending more time in the hide, sealing the burrow entrance with silk (a sealed door usually means "do not disturb - moulting in progress"), laying a thick moult mat of web on the floor. Old World species do not flick urticating hairs, so there is no bald patch to watch - rely on fasting, lethargy and hide time instead.
On its back is MOULTING, not dying
A Greater Horned Baboon Tarantula lying upside down or on its side with legs curled inwards is almost certainly mid-moult. Do not touch it, do not right it, do not mist it - just remove any live prey (crickets can kill a defenceless moulter) and leave the room.
How long between moults?
For this species, expect a moult roughly every 18-35 days for spiderlings, every 45-75 days for juveniles, and every 110-180 days for sub-adults, with adult females moulting around every 8 months (up to 12 months at the extreme). Males never moult again after their ultimate (mature) moult.
After the moult: fang hardening time
The new exoskeleton stays soft, with fangs that cannot grip, for roughly 7 days in this species. Offer no food and no handling for about 7 days - feeding too early is how fresh moulters get injured. The shed exuvium is also the best sexing tool there is - see our tarantula sexing guide for what to look for.
Genuinely worried about behaviour that is not moulting? Our "Is my T okay?" triage tool walks the danger signs one by one.
What ongoing care does a Greater Horned Baboon Tarantula need?
🪞 Moulting
Moults happen at the bottom of the burrow - often announced by a sealed entrance and a fresh soil plug. Do not dig. Keep the water dish full and wait until it reopens and hardens (roughly a week for adults). Adult intervals apply to mature FEMALES - a mature male never moults again.
🧹 Cleaning
Weekly: refresh the water dish and clear boluses from around the burrow mouth. Deep clean rarely and with a catch cup ready.
✋ Handling
A defensive, fast Old World baboon - never handled. Rehouse with a catch cup and long tongs.
What are the most common mistakes when keeping Greater Horned Baboon Tarantulas?
✓ What They Love
- Deep substrate - it is an obligate burrower
- Dry-side arid setup with a full water dish
- Warm stable temperature
- Feeding via long tongs at the burrow mouth
- Respect: fast, defensive, potent venom
✕ Common Mistakes
- Shallow substrate - it will stress and web the whole enclosure instead
- Wet substrate
- Free handling - Old World venom
- Assuming the horn is dangerous - it is soft tissue, the fangs are the hazard
Keep exploring: related care guides
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