Tropical rattlesnake, Neotropical rattlesnake, Guiana rattlesnake. In Spanish: víbora de cascabel, cascabel, cascabela. In Portuguese: cascavel. In Suriname: Sakasneki
The South American rattlesnake is a large highly venomous pit viper species found in South America. The color and pattern of its body are quite variable. The head has a dark brown bar at the top, with a dark post-orbital band. The color of the belly varies, it can be white or yellowish, with light gray spots, becoming darker towards the tail. The tail is usually gray, with dark and vague crossed bands.
Crepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
A carnivore meaning 'meat eater' is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of a...
Terrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Predators are animals that kill and eat other organisms, their prey. Predators may actively search for or pursue prey or wait for it, often conceal...
Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous an...
Precocial species are those in which the young are relatively mature and mobile from the moment of birth or hatching. Precocial species are normall...
Venom is a type of poison, especially one secreted by an animal. It is delivered in a bite, sting, or similar action. Venom has evolved in terrestr...
Highly venomous animals are able to produce the most toxic venom which is considered to be one of the most debilitating and potentially deadly.
NoNot a migrant
Animals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
South American rattlesnakes are found in South America except for the Andes Mountains. They occur in Colombia and eastern Brazil to southeastern Peru, Bolivia, Paraguay, Uruguay, and northern Argentina (Catamarca, Córdoba, Corrientes, Chaco, Entre Rios, Formosa, La Pampa, La Rioja, Mendoza, Misiones, San Juan, San Luis, Santa Fe, Santiago del Estero, and Tucumán). They also occur on some islands in the Caribbean, including Morro de la Iguana, Tamarindo, and Aruba. These snakes can live in a wide range of habitats, however, they prefer savanna, grasslands, shrubland, and semi-arid zones. They can also be found and in the drier, sandier areas, and sometimes occur in forests.
South American rattlesnakes are solitary and prefer to live on their own. They are more active at dusk and in the early hours of the morning. Although very dangerous they are not aggressive towards humans; when feeling threatened the snake will raise its head and front one-third of the body, in a vertical loop in the shape of '' S ''.
South American rattlesnakes are seasonal breeders with the males competing for the female. They mate in the fall and give birth to their young in the summer. Females are ovoviviparous, meaning that they carry the eggs inside their bodies and give birth to live young. They usually produce 4-8 snakelets but are capable of giving birth to up to 14 young.
There are no major threats to South American rattlesnakes at present.
The IUCN Red List and other sources don’t provide the number of the South American rattlesnake total population size. Currently, this species is classified as Least Concern (LC) on the IUCN Red List.