| "Threat of Extinction" levels: Vulnerable - 10% probability of extinction within 100 years - population loss or predicted loss of 20% over a 10 year period and may have less than 10,000 mature individuals in the wild. Endangered - 20% probability of extinction within next 20 years - population loss or predicted loss of 50% over a 10 year period and may have less than 2,500 mature individuals in the wild. Critically Endangered - 50% probability of extinction within the next 10 years - population loss or predicted loss of 80% over the next 10 year period and may have less than 250 mature individuals in the wild. FROGS IN THE ENVIRONMENT ARE A TRUE SIGN OF A WELL-BALANCED ECOSYSTEM The earliest known frog appeared during the early Jurassic Period, about 190 million years ago making frogs older than most major groups of dinosaurs. There are about 4800 species of frogs and toads (which are technically frogs) worldwide with about 300 species in the US. Frogs inhabit every continent EXCEPT Antarctica. Wood Frogs in the Arctic Circle will bury itself and shuts down. They produce glucose in their liver which goes to the organs and through the blood stream. The Wood Frog can actually FREEZE SOLID until the weather warms. Some frogs can jump as much as 20 times their own length (fleas can jump up to 150 times their length, a kangaroo can leap about 4 1/2 times its length). The longest frog jump on record is 33 feet 5.5 inches. Frog have lived in captivity anywhere between 4 years and 15 years, with the longest was European Common Toad at 40 years! The smallest frog in the world is from Cuba, and is only 1/2" long. The largest frog in the world is from West Africa (Conraua goliath) and is about 12 inches long. Because frogs have eyes and nostrils that are on the tops of their heads, they can see and breathe while the rest of the body is under water. Adult frogs breathe with lungs, but also absorb oxygen through their skin. Frogs have teeth. The Chilean Four-eyed Frog has a pair of eyespot marks on its rear end. They are really big poison glands but it looks like eyes from behind. |


| Frog Hollow Campground/RV Park |