SIERRA VISTA, Ariz. — A poisonous beetle is to blame for the deaths of two horses in southern Arizona. Annette Gerhardt noticed that two of her horses were acting lethargic, uninterested in their food ...

It looks like an ordinary beetle, but this insect carries one of the most dangerous chemical defenses in the natural world. Instead of venom, it relies on toxic compounds that can cause painful ...

Nature is beautiful, but don’t let that fool you. Poison isn’t just for snakes; some creatures use it in ways so brutal, you’ll wonder why horror movies haven’t copied them yet. In this wild ride ...

Some insects sting, some bite, and some spray acid bombs out of their nether regions. It’s a perfectly tactical defense, and highly effective for the bombardier beetle. From a predator’s perspective, ...