Ads skipped

The Forgotten Venomous Spiders of Arizona

129K views · Nov 8, 2025 · Pets & Animals

Comments · 321

  • @MyWildBackyard · 10 months ago · pinned

    Do we want to see obscure SNAKES you wouldn’t want to be bitten by next?

    101

  • @MayorClassworm · 10 months ago (edited)

    I love how the world is suddenly like, "yeah remember when we told you about a spider that can necrotize your limbs? What if we told you if you plop all the spiders in the desert, they become killing machines."

    37

  • @brianreddeman951 · 10 months ago

    For kids out there, molecules that end in "ase" break apart molecules that start with the same word: cellulose- cellulasd for example.

    82

  • @Herbie11 · 10 months ago

    You make us all a little smarter every week, Spencer.<br>Thanks man!

    36

  • @Gabriel.1985. · 10 months ago

    I honestly love how the desert spiders look. They&apos;re so different.

    32

  • @David-zi8bk · 10 months ago

    My kids and I love watching these videos together.<br> My boys love finding and looking at spiders now and have no fear of them.

    60

  • @aick · 10 months ago

    <a href="https://www.youtube.com/watch?v=tAnLs0W0GPU&amp;t=620">10:20</a> This is the moment you will remember when they finally do discover that this cool new spider is THE MOST DEADLY on the planet! I got nothing but mad respect for zoologists/entomologists: y&apos;all are my heroes. ♥

    24

  • @jaimeortega4940 · 10 months ago

    Was bitten by two giant Western Brown Recluses. Did nothing except leave weird reddish/pink co centric circles around the bites that faded away. A small Eastern Recluse actually gave me a headache but that&apos;s it. I&apos;d be more concerned with Hantavirus and diseases from rodents. Or the Kissing Bug which carries Chagas disease.

    50

  • @jaimeortega4940 · 10 months ago (edited)

    It&apos;s fascinating that convergent evolution is still taking place between Sicaridae of the Middle East and the Assassin Sand Spider of the Southwest. Fascinating that similar environment with similar prey and predators causes similar physical attributes of unrelated species. Sort of like Death Adders and Vipers. Two totally different species yet the Death Adder looks way more like a typical viper than Elapid. Even elliptical (cat eyes) pupils. Eyes most Elapids don&apos;t have.

    8

  • @masonbutler3203 · 10 months ago

    I actually ran into what I believe was a Loxosceles Arizonica at a buddies house in Lake Havasu. He was hiding under some ping pong paddles outdoors in a house that doesnt have a permanent occupant. I decided due to scorpion activity I should exercise caution and move aside the paddles with a pool cue and immediately after moving one of the paddles a larger than expected spider scurried out. I was initially struck by how similar the appearance was to a normal brown recluse but hesitant to call it as such due to the prevalence of brown recluse &quot;sightings&quot; throughout the southwest. He was quite large, roughly times and a half the size of an american quarter. I was very thankful that I used caution and not my fingers as that was my first night out there and could have seriously messed up my vacation...

    15

  • @timothyswag3594 · 10 months ago

    That&apos;s a beautiful Desert Sand Wandering Spider at <a href="https://www.youtube.com/watch?v=tAnLs0W0GPU&amp;t=600">10:00</a>!

    4

  • @Semiotichazey · 10 months ago

    I think one reason that deserts and rain forests have bred so many venomous animals is because the environments are so stable with minimal seasonal variation. Since it&apos;s easy to adapt to such an unchanging environment, your biggest evolutionary pressures will come from predators and prey.

    3

Up next

LIVE

Terrifying Rainforest Spiders You've Never Heard Of

MyWildBackyard · 82K views

LIVE

The Forgotten Giant Spiders of the US

MyWildBackyard · 177K views

LIVE

The Worst Insect Stings on Earth Ranked

MyWildBackyard · 671K views

LIVE

How Long You’d Last in Every Prehistoric Era

Fossil · 9.1M views

LIVE

Never Kill a Grass Spider in Your Yard — That Funnel Isn’t a Trap

Backyard Second Look · 1.3K views

LIVE

What It's Like To Fight The Deadliest Spiders (Part 2)

Dumb Doggo · 7.7M views

LIVE

The Forgotten Venomous Spiders of the US

MyWildBackyard · 730K views

LIVE

I Caught Australia's Most Dangerous Spider

MyWildBackyard · 844K views

LIVE

Everything We Know About Australia’s Deadliest Spiders

MyWildBackyard · 266K views

LIVE

14 Useless OBSCURE Pokemon Facts

BlueBoyPhin · 390K views

LIVE

They Found 41 Viking Bodies, But Something Was Very Wrong

Buried Earth · 4M views

LIVE

Why No Bird, Fish or Mammal Will Cross this Invisible Line

Forrest Galante · 4M views

LIVE

The Worst Stings in the US Ranked

MyWildBackyard · 851K views

LIVE

America's Forgotten Venomous Spider

MyWildBackyard · 174K views

LIVE

1,000 Ants vs. 1,000 Sand Monsters

Taylor Mason · 1.4M views

LIVE

The Worst Scorpion Stings on Earth Ranked

MyWildBackyard · 319K views

LIVE

The Truth About Giant House Spiders In Britain

Jack Murrie · 680K views

LIVE

The Most Dangerous Spiders in North America Ranked

MyWildBackyard · 608K views

LIVE

Why Are Humans So Afraid of Spiders?

Ancient Human Files and 2 more · 32K views

LIVE

Scientists Finally Worked Out Why Fish Are Growing Legs

BlackWater · 844K views

LIVE

The Extinct Animals That Never Were

ExtinctZoo · 484K views

LIVE

The WEIRDEST Spiders in the US Ranked

MyWildBackyard · 599K views

LIVE

Where do the Long Necked Spiders Come From?

EntoExplorer w/ Dr. P · 466K views

LIVE

The Most Terrifying Spiders To Ever Exist! 😱

BuriedZoo · 128K views

LIVE

The Truth About False Widow Spiders In Britain

Jack Murrie · 419K views

LIVE

The Most Venomous Centipedes in the US Ranked

MyWildBackyard · 155K views

YouTube, with the door locked.

Aegis plays a clean stream instead of YouTube's player, so pre-roll ads, trackers, and fingerprinting never ride along. Drop Shields any time if you want the official player back.