Latrodectus genus includes 32 species found worldwide except Antarctica. Females are dangerous, males are harmless with minimal venom. Webs are stronger than steel and used for infrastructure projects. Latrodectus tredecimguttatus is the most deadly species
Giant squid can reach up to 20m in length with long tentacles. Electric eels generate 860 volts, making them the most powerful electrical animal. Giant forest scorpion is the largest scorpion in the world. Giant squid has long tentacles and enormous eyes
Huntsman spiders are not dangerous despite their large appearance. Australian whistling spiders are the largest spiders in the world. No confirmed spider bites have caused deaths in Australia since 1979
Over 51,000 spider species exist worldwide. Spiders consume 400-800 million tons of prey annually. Scientists estimate quadrillion spiders on Earth
Opisthosoma (abdomen) contains book lungs, heart, reproductive organs, and midgut. Prosoma (cephalothorax) houses brain, muscles, digestive organs, and venom glands. Pedicel connects prosoma to opisthosoma, containing nerves and blood vessels
Spiders belong to class Arachnida, not insects. They have two body regions: cephalothorax and abdomen. Most spiders have eight eyes, some have fewer or none