How jumping spiders can distinguish the living from the non-living

Eight-eyed arachnids can tell when an object's movement is not quite right.

Credit: oleg / Adobe Stock
  • The ability to distinguish lifelike and non-lifelike movements is an important survival skill.
  • Harvard scientists discovered that at least one invertebrate can do this.
  • Scientists tested jumping spiders as they watched an animation and scuttled about on a floating treadmill.
Keep reading Show less

Spiders lace webs in toxins to paralyze prey

Just what every arachnophobe needed to hear.

Luciano Marra from São Paulo, Brasil - Aranha de Teia (Nephila clavipes), CC BY-SA 2.0
  • A new study suggests some spiders might lace their webs with neurotoxins similar to the ones in their venom.
  • The toxins were shown to be effective at paralyzing insects injected with them.
  • Previous studies showed that other spiders lace their webs with chemicals that repel large insects.
Keep reading Show less

Spiders eat 800 million tons of prey per year, more than humans and whales

A Swiss scientist identifies the top predator in the world in a new study.

A spider in the English countryside. Credit: Getty Images.
Keep reading Show less
Quantcast