Not all animals urinate (pee). All animals do have a way of expelling waste products however, and it could be through any means. Unfortunately I do not exactly how spiders do this but it must be noted that they may not.
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Spiders are predators. They are attracted to insects that they can eat, not to humans.
Spiders do not urinate like humans or mammals. They release waste through structures called Malpighian tubules, which filter and remove nitrogenous waste from their blood. This waste is then expelled as solid uric acid, minimizing water loss.
No. they urinate the same way any other animal does.
Spiders that are outside
Spiders scurrying Silently
A group of Spiders is called a cluster or clutter. Spiders belong to the group of animals called arachnids.