Across oceans, frozen tundra, and dense rainforests, we explore animals that rely on toxins to survive and rank them by how quickly they can kill if eaten. Bright warning colors - known as aposmatic ...
Most frogs defend themselves with toxins that sit passively in their skin, but only two species are known to go a step further and actively inject venom into anything that grabs them. These little ...
Poison dart frogs have fascinated researchers. Now their toxin has allegedly been linked to the death of Russian opposition leader Alexei Navalny.