Most spider bites do not cause serious harm. Only a few species pose a real fatal risk to people. The Sydney funnel-web, the Brazilian wandering spider, and, less often, the black widow are the most dangerous. Brown recluse bites and a few others can still cause serious harm. Your real risk depends on venom toxicity,…
Spiders do not see well in the dark the way cats or owls do. Many species still manage fine after sunset. Most spiders have limited night vision, while a few species are much better at spotting movement in low light. You are more likely to notice a spider at night than to see it clearly…
Spiders are not fish, and most do not swim like frogs or ducks. Still, some spiders can move through water, stay afloat, or even hunt in and under it. Some spiders survive water surprisingly well, and a few species are built for life near or under it. A spider in a sink, pool, or puddle…
Spiders reproduce by mating, and the process is often more specialized than you might expect. The male finds a receptive female, transfers sperm, and then the female lays eggs in a protected sac. The exact details can vary by species, but the main steps remain similar across most spiders. You can usually trace the spider…
Spiders usually die when their bodies shut down from age, injury, starvation, disease, predators, or harsh conditions. When you know what a dying spider looks like and what causes its death, you can tell the difference between a true death curl, a molt, and a stressed spider. A spider species can vary a lot in…
Most spiders do not pose a danger to people. The word “poisonous” is usually the wrong word. What matters most is whether a spider is venomous, how much venom it injects, and whether that venom can cause a serious reaction in humans. Most spider bites cause little more than mild pain, redness, or swelling. A…
Spiders breathe through small openings on their abdomen, not through a nose or mouth like humans. Air enters through spiracles on the underside of the abdomen and moves through book lungs, tracheae, or both, depending on the spider species. These breathing parts suit life on land and work in a way very different from mammal…
Spiders do not have noses, so the answer to can spiders smell is a little different from what you might expect. They sense chemical cues with tiny hairs on their legs and pedipalps, which help them find mates, track prey, and avoid danger. You can think of spiders as “smelling” with their feet, because their…
People often ask can spiders fly. The short answer is that spiders do not fly in the way birds or insects do. Some spiders seem to float through the air by using a clever trick called ballooning. This lets them ride wind on strands of silk. So-called flying spiders are really airborne spiders, carried by…
When you ask how do spiders get pregnant, the short answer is that they usually do not get pregnant in the mammal sense. Instead, female spiders mate, store sperm, and later lay fertilized eggs inside an egg sac. People often ask if spiders get pregnant because the female can look swollen or “full.” What you…