AnimaliaHighest rank in taxonomy. Groups all life into domains: Animalia, Plantae, Fungi, etc.IUCN LCInternational Union for Conservation of Nature — the world authority on species extinction risk, using standardized criteria. — Least Concern — widespread and abundant; not at immediate risk of extinction.ApprovedCurrent stage of this record in the editorial review workflow. Recent Sighting
Agkistrodon bilineatus
Cantil
Günther, 1863
Detailed Texts Multi-lang
Robust-bodied viper with a well-defined triangular head. It is distinguished by its distinct white or yellowish facial stripes that extend from the snout to the back of the head.
Added by
Anonymous Curator
Reviewed by
Julia Trouin
Last modified by
Julia Trouin
TaxonomyBiological classification ranks placing this species within the tree of life, from Kingdom down to Genus.
PhylumRank below Kingdom. Groups organisms sharing a fundamental body plan (e.g., Chordata = vertebrates and some invertebrates).Chordata
ClassRank below Phylum. Subdivides by structural traits (e.g., Mammalia, Aves, Reptilia, Insecta).Reptilia
OrderRank below Class. Groups related families sharing common ancestry (e.g., Carnivora, Primates).Squamata
FamilyRank below Order. Groups closely related genera (e.g., Felidae = cats, Canidae = dogs).Viperidae
GenusRank just above Species. The first word in the two-part binomial scientific name.Agkistrodon
Taxonomic AuthorityThe scientist who first formally described and published this species, followed by the year of publication.Günther, 1863
Record Completeness
61%Coming soon
Ecology & StatusHow this species lives: habitat preferences, diet, behavior, population status, and role in its ecosystem.
OriginWhether the species is native (evolved here), endemic (found only here), or introduced by human activity.
Native
Population TrendDirection of change in population size over time: increasing, stable, decreasing, or unknown.
Stable
Breeding SeasonTime of year when this species typically reproduces or flowers.
Year Round
Trophic RolePosition in the food chain: producer, herbivore, carnivore, omnivore, decomposer, or parasite.
Carnivore
Recent SightingsWhether this species has been observed in the wild in Costa Rica within recent years.
Yes
Habitat SummaryOverview of the specific ecosystems and environments where this species is found in Costa Rica. Multi-lang
Inhabits tropical deciduous forests, dry scrublands, and areas near temporary bodies of water.BehaviourDaily activity patterns, movement, territory use, foraging style, and seasonal behavioral changes. Multi-lang
Mainly diurnal and crepuscular; active during rainy seasons.Social ActivitySocial structure: whether the species is solitary, paired, or colonial; hierarchy and communication. Multi-lang
Quite territorial; can show aggressive defensive behaviors if cornered.Feeding GuildWhat the species eats, how it forages or hunts, and its role as a consumer in the food web. Multi-lang
Versatile forager; capable of hunting both on land and near shallow water.Trophic Chain DetailsSpecific interactions in local food webs: prey species, predators, competitors, and scavengers. Multi-lang
Carnivore; consumes fish, amphibians, lizards, and rodents.Reproductive BehaviourMating strategies, courtship displays, nesting or spawning behavior, and parental care. Multi-lang
Viviparous; females give birth to live young.Physical Measures
Length (cm)
60.0 - 100.0 cm
Weight (Grams)
150 g - 600 g
Offspring per cycleTypical number of young (live births, eggs, or seeds) produced by one adult in a single reproductive event or breeding season.5 - 12
Sexual DimorphismObservable physical differences between males and females of the same species (e.g., size, coloration, features).Yes
Lifespan
Sexual MaturityAge at which the individual becomes capable of reproducing for the first time.
2 - 3 Years
Gestation / IncubationDuration from fertilization to birth (mammals) or to hatching (egg-laying species).
120 - 160
Lifespan EstimatedExpected duration of life from birth to natural death under wild conditions.
Males--
Females--
Sexual DimorphismPhysical differences in size, coloration, or morphology between males and females of this species.
Males Multi-lang
Males are slenderer and often have a larger total size.
Females Multi-lang
Females are notably heavier during the reproductive cycle.
Evolutionary AdaptationsInherited traits and behaviors that improve the species' survival and reproduction in its specific environment. Multi-lang
Warning facial coloration: The white lines act as a disruptive pattern on its head.
Main ThreatsDocumented pressures reducing the population: habitat loss, hunting, disease, climate change, and invasive species. Multi-lang
Alteration and fragmentation of dry forests, as well as direct persecution by humans.
Interesting FactsSurprising or notable facts that highlight what makes this species unique or ecologically important. Multi-lang
The name 'Cantil' is of Nahuatl origin and is commonly used in Mexico and Central America to refer to this territorial snake.