There are many species with pretty scary defensive (and offensive) tactics, such as venom. These species in particular can be ...

There are nearly 3,000 spider species in North America alone, making identifying a common house spider difficult. Is it just a harmless little guy? Or a venomous predator waiting to pounce?

The bite from a brown recluse can be serious, but that doesn't mean it's always life-threatening. This is what to do if ...

These caterpillars carry a toxic chemical cocktail and Inquisition-like delivery implements—and their geographic range is expanding ...