Spiders Sleep, But Do They Dream?

Jumping spiders in the genus Portia are sometimes called " eight-legged cats " for their large, almost feline eyes. Just like a cat, Portia spiders rely on their eyes to find, track, stalk, chase, and jump on their prey. While other spiders trap food in their webs, Portia spiders hunt insects and even other spiders and their eggs. (The spiders' unusual intelligence inspired Adrian Tchaikovsky's no