| Term | Definition |
| FROGS | Have smooth skin with many blood vessels in their skin |
| TOADS | Have dry and bumpy skin and get water from the food they eat |
| GILLS | Organs in which oxygen in water is exchanged with carbon dioxide from the blood |
| TADPOLE | Fish shaped larva of a frog that lives in water |
| LUNGS | Organs in which oxygen in air is exhanged with carbon dioxide in the blood |
| METAMORPHOSIS | Changes from an immature form to the adult form of an organism |
| SALAMANDERS | The only group of amphibians with a tail |
| CAECILIANS | Live in Asia and Africa, look like snakes but have moist skin |
| SPECIES OF TOADS IN PA | Fowlers Toad, American Toad, Eastern Spadefoot Toad |
| SPOTTED SALAMANDER | This is the most common salamander in PA |
| ECOLOGICAL INDICATORS | This is an early sign of changes in an ecosystem, amphibians are these |
| HERBIVORE | Another word for saying they eat only plants, ex. plankton, algae |
| CARNIVORE | Another word for saying they eat only meat, ex. insects, worms, spiders |
| VOCAL SAC | Frogs use this to sing |