The golden poison frog is a small amphibian, typically growing to about 2 inches (5 cm) in length — a little smaller than an AirPods case. But don't let their tiny stature fool you!

These frogs have alkaloid toxins. It is said that the golden poison frog, which secretes batrachotoxin, one of the most potent toxins in nature, has enough poison to kill an elephant. About 20 ...