Dinnik’s Viper

🔤 Taxonomy

Vipera dinniki is retained as a species here. Older works use Vipera kaznakovi dinniki or Pelias dinniki. The Reptile Database provisionally places tuniyevi, fiagdonica and dagestanica within this taxon; that does not establish identical care needs for every locality.

📌 Description

A compact Caucasian viper with variable brown, grey, reddish or very dark coloration, approximately 30–55 cm for enclosure planning. Alpine animals need both short basking opportunities and a reliably cool refuge. A uniformly warm display can remove that choice even when its average temperature looks acceptable.

The numbers below are provisional management starting points, inferred from habitat and comparative viper care, not measured species optima or safe limits. Enclosure dimensions are a practical recommendation. Species-specific longevity is insufficiently documented to promise a lifespan; obtain age and health records.

📋 Quick reference

Care point	Provisional active-season target
Adult length	30–55 cm
One adult enclosure	90 × 50 × 50 cm
Ambient air	18–24°C
Basking surface	26–29°C
Cool retreat	16–20°C
Night air	14–18°C
Relative humidity	55–75%

🌍 Distribution

Native to the Caucasus of Russia, Georgia and Azerbaijan. Typical highland populations occupy subalpine and alpine mosaics with rocks, grass and low shrubs. The broad current taxon also includes lower-elevation forms: the Svaneti climate example must not be applied to an animal of unknown origin. Country shading is geographical context only.

Native-range context: country shading is not occupied habitat

🌡 Climate across the native range

Outdoor monthly normals for representative terrain, not a verified snake observation or enclosure settings.

Svaneti uplands — Georgia

View location on Google Maps

Month	Min °C	Mean °C	Max °C	RH %
January	-12.4	-8.7	-5.2	72
February	-11.1	-7.2	-3.4	72
March	-7.3	-3.4	0.1	75
April	-2.4	1.5	4.9	78
May	1.4	6	9.9	80
June	6.6	11.5	15.5	77
July	10.5	15	18.9	75
August	10.5	15.1	19.2	73
September	5.7	10.4	14.8	75
October	-0.1	4.6	9	76
November	-7	-2.7	1.5	71
December	-10.9	-7.2	-3.7	71

Weather data by Open-Meteo.com · CC BY 4.0 · Monthly normals calculated by Herpeton Academy from daily archive values.

⚖️ Legal status

Checked 17 September 2026: no listing under this species name was found in the CITES Appendices or the current EU wildlife-trade annexes. The CITES/EU entry for Vipera ursinii is geographically restricted and explicitly excludes populations in the former USSR. This is not permission to capture or own a viper. National capture, possession, registration, import, transport and sale rules still require a separate check.

Bern Appendix III covers reptiles not in Appendix II; the species is not named separately in Appendix II. Historical names within the kaznakovi or ursinii complexes can complicate the legal interpretation. Before transfer, ask the competent authority to confirm the applicable scope for the documented taxon and locality. Retain invoices, breeder identity, parentage and all origin/import permits.

☠️ Venom

A bite requires immediate hospital assessment. Pain, progressive swelling and tissue injury are possible; clotting disturbance, bleeding, low blood pressure and other systemic effects cannot be excluded. Clinical evidence for these uncommon vipers is limited, and laboratory toxicity or insect-eating habits do not predict a harmless human bite. A small snake, slight marks or an apparently dry bite provide no reassurance.

Move away, call emergency services, remove rings and tight clothing, keep the person still and support the limb without compression. Do not cut, suck, ice or tourniquet the wound, and do not delay transport to capture the snake. The receiving hospital and poison centre must decide on antivenom: effectiveness of a product made for another viper cannot be assumed. Agree that emergency pathway before acquiring the animal.

🤌 Husbandry

Keep one animal per locked enclosure inside a locked, access-controlled room with secondary containment. Use a shift compartment that permits isolation and visual confirmation before servicing; never free-handle. Written bite and escape plans, trained backup staff and a reptile veterinarian are prerequisites.

Quarantine separately for at least 90 days as a working minimum, extending it on veterinary advice. Use paper substrate and dedicated tools; record meals, weight or body condition, stools and sheds. Arrange parasite screening for uncertain origin, weight loss or abnormal faeces. Any examination or weighing must use an established protected-contact procedure.

💡 Lighting

Provide 12–14 hours of visible light in the active season and darkness at night. Shade and opaque hides must remain accessible. A species-specific UVB requirement is not established; any low-level UVB programme should be measured and reviewed by the veterinarian, with no forced exposure. Protect lamps and wiring from contact.

🌡 Heating and temperature

For an alpine-source Dinnik’s viper, place a sheltered basking patch beside dense low cover and retain a cooler shaded passage between refuges. Lower-elevation lineages need locality-specific review before using this mountain-oriented gradient. Measure air, basking surface and the cool hide separately; use thermostatic heating and test summer room cooling before acquisition.

Winter dormancy is a separate locality-specific programme for established healthy adults, agreed with the source institution and veterinarian. Do not copy freezing outdoor climate values, cool thin or sick animals, newly arrived or gravid females, or apply adult breeding cycles to juveniles. Preparation, hydration checks and recovery to feeding need a written protocol; no universal winter temperature is justified here.

💧 Humidity and water

Measure humidity near the resting animal; the table is a provisional band, not a reason to wet every surface. Provide a locally moist retreat and a dry resting option with cross-ventilation. Persistent condensation, sour substrate or avoidance of the moist hide needs investigation.

Keep clean drinking water available in a stable shallow bowl that can be serviced after isolating the snake. Forced soaking and manual removal of retained skin expose both keeper and animal to harm; recurrent shedding failure requires veterinary review.

🌿 Enclosure and decoration

A starting enclosure of 90 × 50 × 50 cm gives one adult room to stretch and choose between covered warm and cool areas; enlarge it for unusually large individuals. Secure every vent and cable gap, including against neonatal escape. Keep the shift door visible and reachable through the protected servicing system.

After quarantine, use about 5–8 cm of compactable, fertiliser-free soil mixed with washed sand, with leaf cover where appropriate. Maintain a dry upper resting surface and modest moisture locally below it. Fix stones to the base before adding substrate. Avoid collapsing rock piles, sharp gravel, aromatic wood and loose dusty sand. Feed on a clean surface: swallowed substrate, oversized prey and dehydration can contribute to impaction.

🐁 Feeding

Obtain the individual’s actual feeding record rather than assuming a uniform diet across the dinniki complex. Where thawed mice are already accepted, begin with a small whole prey item every 10–14 days for adults; offer smaller juvenile meals roughly every 7–10 days. Seasonal refusals require checking condition and temperatures before changing food.

For vertebrate prey, start no wider than the snake’s widest body section; whole prey normally needs no routine vitamin or calcium dusting. Avoid live rodents and feeding disturbance. Never attempt force-feeding at home. Persistent refusal with weight loss, regurgitation or mouth discharge needs diagnosis rather than progressively larger meals.

🥚 Breeding

This is a live-bearing species; there is no egg-incubation schedule. Males often have relatively longer tails, but visual clues are not sufficient for a breeding decision: have sex confirmed through a professional protected procedure. Reliable universal maturity ages are not established; use documented age, adult size, body condition and the source institution’s records.

Pair only healthy mature animals of compatible documented locality under a specialist plan. Gestation and recovery can be costly for small females, so do not assume annual breeding is appropriate. Prepare separate locked neonatal housing, feeding expertise and lawful placements before pairing. Keep records of parentage, births, sheds and first meals.

🩺 Common problems

Overheating: unusual exposed resting or repeated escape attempts warrant immediate checks of the cool hide and room.
Respiratory infection: bubbles, wheezing or open-mouth breathing need prompt reptile-veterinary assessment.
Dysecdysis, dehydration and dermatitis: check water access, refuge moisture and wet dirty substrate; do not manually strip skin.
Obesity, impaction or parasites: track meals, stools and body condition; persistent change needs diagnosis.
Reproductive problems: prolonged abnormal swelling, weakness or unsuccessful birth requires urgent veterinary advice.

📌 Conclusion

Locality is a practical care variable in the broad dinniki complex. An animal without that information needs expert assessment before any seasonal cycle; the attractive mountain-viper label alone is not enough to choose winter conditions.

📚 Sources and further reading

ReptiFiles was searched first on 17 September 2026; no species-specific guide was found. Distribution and taxonomic references establish natural-history context, not tested terrarium targets. The official keeping guidance supports containment; numerical care values are explicitly provisional. Venom studies support caution, not an antivenom recommendation.