1. Amphibians are cold-blooded animals that have backbones and features that place them as a transition species between fish and reptiles. They are in the class Amphibia that includes more than 3,500 species of frogs, toads, newts and caecilians, which are wormlike. All frogs are in the genus Rana.
2. The name amphibian means “double life,” since frogs start out as eggs and then gill-breathing tadpoles living totally in water. When they grow into adults, they lose their gills, grow legs, breathe air and live between water and land.
3. Whether a frog is male or female can be determined by the size of its eardrum. If the eye is larger than the eardrum, it is a male. If it has smaller ears compared to its eyes, it’s female.
4. Frogs jump using their powerful back legs. Some frogs can jump up to 20 times their body length.
5. The poison dart frog of South America has one of the most toxic poisons on Earth. Native tribesmen of the region use their poison to coat the tips of arrows.
This article was originally published in the AMERICAN FRONTIERSMAN ™ 2015 issue #174. Subscription is available in print and digital editions here.