Boreal Chorus Frog
These are small frogs that are native to North America. They are usually brown however, the dorsal can be green and they have enlarged toe discs that help them climb vegetation and small grass.
This species is found around bodies of water in forests or cleared lands. Unlike a lot of other amphibians, they have a soft croak rather than a loud one and they are usually one of the first amphibians to appear in the spring.