Regalian fleaspider
Regalian fleaspiders were arachnids, whose venom could be used to synthesize a drug which improves a humanoid's blood circulation. 

Julian Bashir asked Quark to import some fleaspiders for Kira Nerys in 2373, but neglected to get an import permit. Quark also imported some illegal Regalian liquid crystals along with the spiders. ()

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Animals