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 ...

A new species of poison dart frog has been discovered in the heart of the Brazilian Amazon, where dense rainforests host some of the most diverse and complex ecosystems on Earth. In a study published ...

Poison dart frogs have fascinated researchers. Now their toxin has allegedly been linked to the death of Russian opposition leader Alexei Navalny.

Epibatidine is about 100 times more potent than morphine, and derived from frogs native to South America ...

Three studies have recently explored toe-tapping, which seems to have something to do with frogs preying on insects. By Elizabeth Landau Faster than Gene Kelly tap-dancing in the rain, many species of ...

A Brazilian woman was arrested on charges of wildlife trafficking after police in Colombia discovered 130 poisonous frogs in her luggage. Authorities at El Dorado International Airport in Bogotá found ...

Why scientists in South America are putting tiny pants on tiny poisonous tree frogs, watch a pair of endangered tiger cubs swim for the first time at the London Zoo, and more of today's top videos. (0 ...