4. Brown spider, after being bitten by it, the injured person will have headaches and vomiting, and even confusion, skin tissue will fall off and ulcerate from the wound, and the place where it has been bitten will also appear red and swollen, and even cause death.
3. Black Widow Spiders, as the name suggests, will bite their mates to death after mating is complete. So they are all female spiders, and being bitten by a black widow is not fatal, but its toxin is a greater threat to children and the infirm, which can cause temporary confusion.
2. Brazilian roaming spider, this spider can poison about 20 mice with a milligram of venom. When bitten by it, it can cause loss of nerves, difficulty breathing and severe pain, and in 2007, the Guinness Book of World Records awarded the Brazilian roaming spider the title of "Most Venomous Spider".
1. Funnel-shaped spiders, which like to hide in dark, damp, cool places, female funnel web spiders have five times more venom than male funnel web spiders. If you are bitten by it, you will die within 15 minutes.