Who needs to decorate for Halloween when you have these guys around?
All spiders are venomous, because they need venom to kill their prey. However, prey usually consists of a variety of insects (including pest insects), and humans aren’t on the menu.
Venom requires a large amount of energy to produce, so arachnids typically don’t want to waste it on something they won’t eat.
For example, the much feared black widow spider is actually considered quite shy. The CDC reports: Spiders are usually not aggressive and most bites occur because a spider is trapped or unintentionally contacted.