Tiny poison dart frogs may only be one inch (2.5 centimeters) long, but they pack a powerful punch—of poison. Weighing less than an ounce (28 grams), these frogs are considered one of Earth's most toxic, or poisonous, species. For example, the golden poison dart frog has enough poison to kill 20,000 mice.
With a range of bright colors—yellows, oranges, reds, greens, blues—they aren't just big show-offs, either. Those colorful designs tell potential predators, "I'm toxic. Don't eat me."
Scientists think that poison dart frogs get their toxicity from some of the insects they eat. The insects feed on plants that have toxins, which then pass to the frogs when they eat the insects. Poison dart
