No, there are not living animals crawling on Mars. The images show dark, branching surface marks on the red planet, and scientists call them mars spiders because their shape looks spider-like from orbit. These features are real, but they are geological patterns made by ice and gas, not actual creatures. You usually find these patterns…
Spiders have lived on Earth for hundreds of millions of years. Some of their ancient relatives were strikingly large. Some spiders and spider relatives in the past were larger than most modern spiders, but many of the “giant spiders” often discussed were not true spiders. Fossils reveal a more complex story than a simple yes…
Spiders turn prey into liquid and then suck that liquid into their bodies. They do not chew their food. Instead, they digest it outside their bodies and drink it. This feeding style fits their narrow bodies and tiny mouths. Spiders, as arachnids, eat insects and other small prey. Their feeding habits change based on species…
You may picture spiders the size of your hand, or even bigger, when you ask were spiders big back then. Some prehistoric spiders grew larger than many modern species, and a few fossil finds show truly impressive body sizes. Fossils show that spiders have lived on Earth for at least 380 million years. Spiders changed…
Alaska has spiders, and you do not need to panic if you spot one. Most spiders in Alaska are small, shy, and more interested in insects than in people. Alaska’s cold climate limits how many species can thrive there. Yet plenty of spiders still survive. You may find spiders indoors, in gardens, along wood piles,…
Spiders breathe through special organs in their abdomen, not through a nose or mouth like you do. Most arachnids use book lungs, tracheae, or both. These structures move oxygen into the body for gas exchange. Tiny internal breathing surfaces let oxygen pass into their hemolymph and carry carbon dioxide back out. That setup works well…
Yes, spiders live in Hawaii, and you are likely to see a mix of harmless web builders, house spiders, and a few larger species that look much scarier than they are. Most encounters happen in gardens, around homes, or in damp outdoor areas. Truly dangerous bites are uncommon. Hawaii has some native species you may…
Yes, spiders lived alongside dinosaurs, and the fossil record shows they did. Spiders and other arachnids were already part of Earth’s ancient land life long before dinosaurs appeared. Some spider relatives go back even further in time. Spiders survived during the dinosaur era, and some arachnids lived tens of millions of years before dinosaurs ever…
Spiders stick to walls because their feet are built for tiny-scale contact. Their legs use thousands of microscopic hairs and fine tip structures that create enough adhesion and friction to hold on, even on smooth surfaces. Biology and physics work together to let spiders climb. When a spider places its feet on a wall, its…
Spider cannibalism is real, but not every spider hunts its own kind all the time. Most spiders do not spend their lives eating other spiders, but cannibalism can happen when mating, feeding, or competition pushes them into it. The idea that spiders are always brutal toward each other goes too far. Spider behavior changes a…