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In Sonora, Mexico, it is feared more than any other reptile. In Nicaragua, it is considered the country's most dangerous snake. [11] Bite symptoms, in general, may include nothing more than local pain, swelling and discoloration, but those from adult specimens can cause massive swelling and necrosis.
Helodermatidae is a family of terrestrial lizards whose only genus is Heloderma, which includes the only venomous lizards on the American continent. The family consists of two species native to the southwestern United States, Mexico and Guatemala, which prefer semiarid habitats. 2 species occur in Mexico. Heloderma horridum (Wiegmann, 1829) VU
The terciopelo (Bothrops asper) [note 1] is a species of pit vipers, found from north-east Mexico to northern South America. [6] At low to moderate elevations, its habitat ranges from northeastern Mexico to Colombian and Ecuadorian Andes, as well as Venezuela. [3]
Bothrops is a genus of highly venomous pit vipers endemic to the Neotropics. [1] The generic name, Bothrops, is derived from the Greek words βόθρος, bothros, meaning ' pit ', and ὄψ, ops, meaning ' eye ' or ' face ', together an allusion to the heat-sensitive loreal pit organs.
The black mamba (Dendroaspis polylepis) is a large and highly venomous snake species native to much of Sub-Saharan Africa. It is the second longest venomous snake species in the world and is the fastest moving land snake, capable of moving at 4.32 to 5.4 metres per second (16–20 km/h, 10–12 mph).
Agkistrodon taylori is a species of venomous snake, a pitviper found only in northeastern Mexico. The standardized names are Taylor's cantil (English) [3] [4] [5] and Metapil (Spanish), [4] although it is sometimes called the ornate cantil [6]: 51 p. as well as several other colloquial names.
The species is endemic to western Mexico. Like all other pit vipers, it is venomous. The specific name, basiliscus, is derived from the Greek word for king, βασιλισκος (basiliskos), and alludes to this snake's large size and potent venom. [3] No subspecies are currently recognized. [5]
Crotalus simus is a venomous pit viper species found in Mexico and Central America. The specific epithet is Latin for "flat-nosed", likely because its head is blunt compared with lanceheads . Three subspecies are recognized, including the nominate subspecies described here. [5]