Green Rat Snake

Green Rat Snake

Senticolis triaspis

Silhouette: Alex Slavenko · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Monteverde Cloud Forest Reserve
24 Verified sightings at Monteverde Cloud Forest Reserve From 2019 to 2026
59 Verified sightings across all 11 parks From 2019 to 2026
December Best month highest sighting rate
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Green Rat Snake

Senticolis is a genus of nonvenomous snake in the family Colubridae. The genus Senticolis is monotypic, containing the sole species Senticolis triaspis, also known as the green rat snake. The species is endemic to Central America, Mexico, southern Arizona, and southern New Mexico.

Senticolis triaspis may grow to a total length (including tail) of 160 cm (63 in). Dorsally, it is green or olive green, and ventrally it is light yellow. The head is elongated, the body is slender, and the smooth dorsal scales are arranged in 31–39 rows.

Senticolis triaspis usually inhabits evergreen forests and grassland. Senticolis triaspis is well distributed in the Baboquivari, Pajarito, Atascosa, Santa Rita, Empire, Patagonia, Chiricahua, Swisshelm, Pedregosa, and Peloncillo mountains of southeastern Arizona.

Senticolis triaspis consumes small animals such as lizards, birds, and bats, killing them by deadly constriction. Senticolis triaspis is primarily diurnal. An adult female of S. triaspis is able to lay up to nine eggs in a clutch.

Three subspecies are recognized as being valid, including... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
~20%
2 Santa Rosa National Park 🇨🇷 Costa Rica
~20%
3 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
~10%
4 Rincón de la Vieja National Park 🇨🇷 Costa Rica
Insufficient data
5 Masaya Volcano National Park 🇳🇮 Nicaragua
Insufficient data
6 Cusuco National Park 🇭🇳 Honduras
Insufficient data
7 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
Insufficient data
8 Cañón del Sumidero National Park 🇲🇽 Mexico
Insufficient data
9 Palo Verde National Park 🇨🇷 Costa Rica
Insufficient data
10 Calakmul Biosphere Reserve 🇲🇽 Mexico
Insufficient data
11 Arenal Volcano National Park 🇨🇷 Costa Rica
Insufficient data

Quick answers

What are the chances of seeing a Green Rat Snake in Monteverde Cloud Forest Reserve?

About 10% of wildlife watchers report a Green Rat Snake sighting in Monteverde Cloud Forest Reserve, based on 24 verified sightings from GBIF citizen-science data.

When is the best time to see Green Rat Snake in Monteverde Cloud Forest Reserve?

December has the highest sighting rate for Green Rat Snake in Monteverde Cloud Forest Reserve in our monthly data.

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