I don't know about you, but every time I see a spider scurry past or dangle down from its web in Arizona I scream a little. No matter the type, or how big or small, I hate the little creatures.

While I very much dislike spiders -- they quite literally make my skin crawl -- I do try not to kill them because I know they have a good purpose. Often I'll relocate them despite my distaste for them, but sometimes this is harder than others -- especially if I know the spider can become dangerous when agitated.

What are the most dangerous spiders in Arizona?

There are various species of spiders in Arizona that will make themselves at home wherever they please. A lot of the time these animals are harmless, but there are three types you should really watch out for. Being bitten by these spiders certainly wouldn't be a pleasant experience. And no, this list doesn't include tarantulas

Black Widows

I'm sure you've heard of the black widow spider -- the famed female arachnid is known in part for eating the male after mating. A black widow can typically be identified by the red hourglass marking on its abdomen. However, this feature can sometimes be difficult to see, and only the females have it.


A bite is potentially dangerous and people should watch for symptoms of a painful lesion, muscle failure, vomiting, nausea, and respiratory distress. Children and the elderly are most at risk.

Arizona Brown Spider

If this spider doesn't already seem creepy enough, it's a relative of the brown recluse. It creates funnel webs and usually hides in the ground or under objects in dark areas.

At first, its bite may not seem serious, but it can potentially cause tissue necrosis which in the worst case could lead to amputation.

Wolf Spider

While I hate wolf spiders the most, I never thought of them as particularly dangerous. Just super creepy for carrying all those baby spiders on their back -- ick.

These relatively large spiders can pack a painful bite. The main concern isn't venom, but rather the infections they could pass on and potential swelling of lymph nodes.

Mhalcrow via Wikimedia
Mhalcrow via Wikimedia

What to do you see these spiders

First off, don't freak out. If you don't mess with it, then it won't bite you. If you have a major spider infestation, however, it's probably best to consider calling a professional to help with your pest issue.

some easy ways to prevent spiders from making your home their home is to do regular cleanings, pick up clutter where they could hide, and seal up any known openings to the outside. And If you do spot a friendly spider in your home and aren't terrified, be kind to the little creature and place it back outside.

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