Green Basilisk

Green Basilisk key facts

Care level

Intermediate

Lifespan

13-15 years in captivity

Size

60-76cm total length, the tail making up about two-thirds

Temperature

Humidity

50〜75%

Diet

Omnivorous with a strong animal bias: insects such as dragonflies and grasshoppers, small reptiles, amphibians, birds and mammals, and fruit

Temperature & Humidity

Keep the enclosure at 22-29 C, allowing a night-time drop to around 16 C. Aim for a basking spot of 29-32 C, adjusting it down a little in winter since ambient temperatures also fall in the wild. Keep relative humidity at 50-75 percent by day, raising it to 85-90 percent at night if reproducing a rainy season.

Enclosure

It needs a tall, roomy enclosure with branches overhanging a water container deep enough to submerge in; keepers suggest something like 150 cm wide by 120 cm deep by 210 cm high. Startled animals dash about and damage their snouts, so site the enclosure somewhere quiet and screen it if necessary. Plant it heavily so that females can excavate nesting tunnels.

Diet & Feeding

Omnivorous with a strong animal bias, taking insects such as dragonflies and grasshoppers as well as smaller lizards, frogs, small birds, small mammals including bats and mice, and fruit. In captivity use feeder insects as the staple with mice and fruit alongside. Dust with calcium and vitamin supplements and provide UVB for this diurnal species.

Temperament

Extremely territorial; keeping more than one male together is generally held not to work. If you intend to breed, use one male with several females, and if you do not, keep the sexes apart. Raised from a juvenile it can become accustomed to people and its surroundings.

Notes

Not listed on any CITES appendix. The IUCN assesses it as Least Concern. It appears neither on the schedule of designated dangerous animals under the Order for Enforcement of the Act on Welfare and Management of Animals nor on Japan's list of invasive alien species. Animals in Japan are mostly captive-bred. Captive specimens are said to develop less impressive crests than wild ones. Adults approach 70 cm, so keeping one for life requires large housing.

About Green Basilisk

The green basilisk is a Central American lizard with a vivid green body and tall crest, suited to intermediate keepers, living 13–15 years and reaching 60–76 cm in length.

7 things to know before welcoming a Green Basilisk

1. 1Needs a Tall, Spacious Enclosure

   Adults reach 60–76 cm in length and are active, arboreal climbers, so they need a tall, spaciously sized enclosure. Plan for enough vertical space and secure branches or perches ahead of time to prevent falls and injuries.

2. 2A Water Feature Is Essential

   True to its reputation for sprinting across water to flee danger, the green basilisk is closely tied to water in its natural behavior. Provide a water dish large enough to submerge in, and keep it clean alongside proper humidity management to support the animal's health.

3. 3Can Be Skittish and Easily Startled

   When startled, this lizard may bolt or thrash inside its enclosure, which can lead to injury. Avoid sudden noises or movements, and let the animal grow accustomed to your presence gradually.

4. 4UV Lighting and a Temperature Gradient

   As a basking species, the green basilisk needs UV lighting and appropriate heating to create a temperature gradient across the enclosure. Provide both a basking spot and a cooler area where it can retreat.

5. 5A Long-Term Commitment

   In captivity, green basilisks are known to live around 13–15 years, and their enclosure size and layout may need adjusting as they grow. Consider this a long-term commitment before bringing one home.

6. 6The Sail and Crest Change With Maturity

   The head sail and the crest running from back to tail become especially pronounced in mature males. Because appearance can change significantly with growth and individual variation, this transformation is part of the species' distinctive appeal.

7. 7Research Thoroughly Before Bringing One Home

   As this species is considered suitable for intermediate keepers, prior reptile-keeping experience is a real asset. Make sure your equipment and enclosure layout are fully ready before bringing one home.

Frequently asked questions about Green Basilisk

Q.How difficult is it to keep a green basilisk?

A.The green basilisk is considered suitable for intermediate keepers. Some prior experience helps with managing temperature, humidity, and a spacious enclosure setup.

Q.How big does a green basilisk get?

A.Adults reach roughly 60–76 cm in total length, with the tail making up about two-thirds of that. Plan enclosure size with this eventual growth in mind.

Q.How long do green basilisks live?

A.In captivity, they typically live around 13–15 years, so it's worth planning for a long-term commitment before bringing one home.

Q.Does a green basilisk need a water feature?

A.Yes. Known for sprinting across water to escape danger, this species benefits from a water dish large enough to submerge in, kept clean alongside proper humidity management.

Q.Are there any legal restrictions on keeping one?

A.The green basilisk is not subject to CITES regulation.

Useful tools for Green Basilisk care

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