The same food chain principles apply for bug-eating fish. But Chumchal says in addition to concentrating energy, fish and spiders accumulate contaminants from every meal.

Of course, spiders are just part of the food chain, and are frequently eaten themselves: Between 8,000 and 10,000 predators feed exclusively on spiders, while spiders are also an important part of ...

Though all spiders make silk, only some spiders use their silk to construct webs for capturing prey. Some spiders actively hunt for their food, including two of the more recognizable families: wolf ...