Frogs

Frogs are amphibious creatures that are found all around the world. There are around 4,000 different known species of frogs. Out of those 4,000 types, only 17 are found in Pennsylvania. Two of the main frogs that are commonly found in creeks are the bull frog and northern leopard frog. The most abundant species is the bull frog, found in almost any body of water. They are rather large with a leaf green color. Bull frogs are most known for their extremely loud mating calls. They do this to show their dominance over younger frogs. They are mainly carnivorous, eating almost anything they can. They have a wide ranging diet that consists of insects, smaller frogs, and any small mammals they can catch. They play a huge role in keeping the insect population in check. The northern leopard frog is very similar to the bull frog, except for its slightly smaller size and beautiful coloring. It is easily identified cause of its green body covered in brown spots. Its diet is almost the same as the bull frog, eating almost anything they can fit in their mouths. Both the bull frog and northern leopard frog can lay a massive amount of eggs. Each can lay from 6,000-20,000 eggs at a single time. These eggs have an awful taste to them, making predators less likely to eat them. The babies aren't usually prey until they hatch as tadpoles. Once they hatch, tadpoles are easy food for fish and other animals.

Adult Bull Frog

http://www.fcps.edu/islandcreekes/ecology/bullfrog.htm

This is a link to a video of a male bull frogs mating call- https://www.youtube.com/watch?v=M02_dnl9zCA

Northern Leopard Frog
http://upload.wikimedia.org/wikipedia/commons/d/d0/Northern_Leopard_Frog_Ontario_1.JPG