Among the various types of spiders that are spread throughout the world, Brazilian spiders stand out with very unique characteristics. Unlike most spiders known for building web nests to capture prey, Brazilian spiders have a different approach to hunting. These spiders rely on active hunting skills and have a deadly weapon in the form of highly effective neurotoxic venom to immobilize their prey. This makes Brazilian spiders one of the most dangerous spider species in the world.

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There are 9 species of Brazilian wandering spiders, all active at night and can be found in Brazil. Some species can also be found throughout Central and South America, from Costa Rica to Argentina. Brazilian wandering spiders are large, with bodies reaching 2 inches (5 cm) and leg span up to 7 inches (18 cm). The color of the species varies, although all are hairy and mostly brown and gray, some species have bright spots on their abdomen. Many species have black and yellow or white stripes on the undersides of their front legs.

Arachnids are called wandering spiders because they do not make webs but roam the forest floor at night to hunt for prey. They spend most of their time hiding under logs or in crevices, and come out to hunt at night. They eat insects, other spiders, and sometimes small amphibians, reptiles, and mice. When Brazilian wandering spiders feel threatened, they often take a defensive position by standing up on their hind legs and stretching out their front legs to display their fangs. These spiders can also jump up to a distance of 1.3 feet (40 cm).

Like most spider species, female spiders are larger than male spiders. Male spiders perform a dance to attract the attention of females, and males often fight each other for the female's attention. Females can be picky, and they often reject many males before choosing a mate. Once a female chooses one, the male must be cautious because the female often attacks the male after mating is finished. The female can lay up to 1,000 eggs at once, which are safely stored in a silk egg sac. Brazilian wandering spiders typically live for one or two years.

The following is the translation of the given 'Bahasa' text to 'English' while preserving any html tags: "The venom of the wandering spider in Brazil is a complex mixture of toxins, proteins, and peptides. Its venom affects ion channels and chemical receptors in the victim's neuromuscular system. After being bitten by one of these spiders, humans may experience initial symptoms such as severe pain at the bite site, sweating, and shivering. Within 30 minutes, the symptoms become systemic and include high or low blood pressure, rapid or slow heartbeat, nausea, stomach cramps, hypothermia, dizziness, blurred vision, seizures, and excessive sweating associated with shock."