Jumping spiders are among the most behaviourally complex invertebrates kept in captivity. Understanding what you’re seeing — and what it means — makes keeping them significantly more rewarding.
👀 Visual Communication
Jumping spiders communicate primarily through visual displays that are surprisingly nuanced. Unlike most invertebrates, they can genuinely see you — and they respond to what they see. A spider that turns to face you as you approach isn’t coincidence; it’s an active assessment.
🎯 Hunting Behaviour
A jumping spider’s hunt is a combination of planning and execution that looks almost calculated. The spider will spot prey from a distance, triangulate its position using its secondary eyes, then navigate an indirect route to get to a point directly above the prey before pouncing. This planning behaviour is one of the things that makes them so fascinating to observe.
Studies have shown that Portia (a related genus) can plan detour routes that involve temporarily losing sight of the prey — indicating working memory and a form of spatial planning that was once thought exclusive to vertebrates.
🔮 Curiosity and Investigation
Jumping spiders actively investigate new objects in their environment. If you place a new piece of decor in the enclosure, your spider will likely examine it methodically within hours. This curiosity extends to keepers — a spider that has been handled regularly will often turn to watch its keeper moving around the room.