Rhinoceros rat snake (Gonyosoma boulengeri)
Photo: derivative work: TimVickers Rhynchophis_boulengeri_head.jpg: TimVickers / Public domain · via Wikimedia Commons

Reptile · Rat snake

Rhinoceros rat snake care guide

Gonyosoma boulengeri

Intermediate

The rhinoceros rat snake is a intermediate-level rat snake from N Vietnam, S China. Adults reach 100–160 cm and live 10–15 years in captivity. Arboreal and heat-sensitive; avoid temperatures above 30°C. Solitary.

  • Enclosure 120 × 60 × 90 cm
  • Temp 24–28°C
  • Humidity 60–80%

How much does a rhinoceros rat snake cost in Canada?

Animal$500–1200Typical captive-bred price
Bioactive enclosure$1360–2320Enclosure $660–1260 · equipment $190–420 · bioactive supplies ≈ $530
Yearly upkeep$200–350Food, supplements, bulbs, power, vet fund
First year total$2060–3870All prices CAD, estimates

Rhinoceros rat snake quick facts

Skill level
Intermediate
Adult size
100–160 cm
Lifespan
10–15 years
Activity
Diurnal
Native range
N Vietnam, S China
Minimum enclosure
120 × 60 × 90 cm (47 × 24 × 35 in, ≈ 171 US gal)
Housing
Best kept alone.
Temperature
24–28°C
Humidity
60–80%
UVB
Recommended
Diet
Carnivore – frozen/thawed mice
Bioactive style
Tropical arboreal

Rhinoceros rat snake enclosure & bioactive setup

Give one adult at least 120 × 60 × 90 cm (47 × 24 × 35 inches). Best kept alone. This species suits a tropical arboreal bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix10 cm
  3. Drainage – clay bio balls5 cm

Most of the action is vertical – keep the soil moist but not wet, and focus on perches and dense planting.

Temperature: 24–28°C. Humidity: 60–80%. UVB: Recommended.

What does a rhinoceros rat snake eat?

Carnivore – frozen/thawed mice. Feed one appropriately sized thawed mouse every 7–10 days.

Handling, temperament & health

Generally calm and inquisitive for an arboreal colubrid.

Health watch: Watch for overheating, dehydration and respiratory infections.

Cleaning & maintenance schedule

Daily

  • Mist to raise humidity – usually a heavy evening misting with a dry-down by day.
  • Check temperatures at perch height.

Weekly

  • Feed; remove uneaten food (and diet dishes after 24–48 h).
  • Check the drainage layer and prune vines.
  • Look for stuck shed on toes and tails.

Monthly

  • Top up leaf litter.
  • Check branches and mounts are still secure.
  • Clean glass, vents and misting nozzles.

Yearly

  • Refresh the top of the soil in open areas.
  • Replace UVB bulbs (if used) on schedule.

Recommended for a rhinoceros rat snake bioactive

Quantities are for one minimum-size enclosure (120 × 60 × 90 cm).

Rhinoceros rat snake FAQ

Is the rhinoceros rat snake good for beginners?

The rhinoceros rat snake is best for keepers with some experience (intermediate). Generally calm and inquisitive for an arboreal colubrid.

What size enclosure does a rhinoceros rat snake need?

At least 120 × 60 × 90 cm (about 47 × 24 × 35 inches, roughly 171 US gallons) for one adult. Best kept alone.

How much does a rhinoceros rat snake cost in Canada?

Typically $500–1200 CAD to buy, about $1360–2320 CAD for a complete bioactive enclosure, and $200–350 CAD a year to keep.

What temperature and humidity does a rhinoceros rat snake need?

Temperature: 24–28°C. Humidity: 60–80%.

What does a rhinoceros rat snake eat?

Carnivore – frozen/thawed mice. Feed one appropriately sized thawed mouse every 7–10 days.

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This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.