What Spiders Are Aggressive to Humans?

The most dangerous spiders are the Redback Spider and the Funnel-Web Spider. Both are from the genus Atrax.

They have venom that can cause severe pain and even death. However, these two spiders aren’t aggressive to humans.

A female redback spider is considered worthy of fear, as its venom contains 40 different toxic proteins. In addition, its venom can overload your nervous system and can kill in just a few minutes.

Funnel-Web Spiders are also venomous. When you’re bitten, you may feel intense pain, nausea, diaphragmatic paralysis, and breathing problems. Some cases may cause you to become feverish.

These spiders have venom that can damage tissue and blood, and can cause open sores nearly an inch in size. Usually, the bite is not noticeable for up to three hours. If you experience any of these symptoms, seek medical attention immediately.

The Yellow Sac Spider is found in Mexico and throughout the United States. It is also known as the wolf spider. Unlike the Redback Spider, it is not aggressive to humans.

The Aphonopelma johnnycashi is a tarantula species that is abundant in California. Known for its dark coloration, it reminds researchers of the late country singer Johnny Cash.

The Redback Spider is a native to Australia. It has caused human deaths in that country. Often, it resides in clothing or footwear.

The Brown Recluse spider is a relatively harmless species, though it can be venomous. Despite the spider’s reluctance to bite, it can be trapped by your clothing. This means that the spider could be lying in wait for you to come into contact with it.