It doesn't have the red back I'm used to. Maybe a different kind
About 2" long. Not sure about this. Don't think the markings are quite right for a Wood Frog (Lithobates sylvaticus). Slightly larger than a Spring Peeper and no X on back. Shape of spots on legs and markings on back are what is leading me to ID it as brown colour phase.
Buddy was cold today
Not too sure... Could be Wood frog too.