This Jumping Spider Trains Itself to Kill | KQED
Briefly

Regal jumping spiders grow in a tiny garden domain, learning to hunt without webs. Upon mating, the female lays 50-200 eggs, which she guards in a silk sac. The hatchlings rely on yolk for nutrition in their early weeks, developing under their mother's care. Their keen eyesight, with eight eyes, is essential for hunting. The smaller pairs detect motion to fend off predators, while the central pair assists in judging distance and seeing fine details. As they grow, they venture out to hunt and find their first meals.
Each jumping spider must learn to stalk and pounce - they don't use a web to catch prey. To make the next generation of killers-in-training, she'll need a mate.
When they hatch, the nest serves as both their nursery and a silky jungle gym. They grow up here under the many watchful eyes of their mom.
Jumping spiders' keen eyesight is fine-tuned for daylight hunting. They have eight eyes, allowing them to see crisp detail and vivid color.
The three smaller pairs on the sides see motion, making it hard for predators to sneak up on them, while the central pair helps judge distance.
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