"This colorful little treefrog is Hypsiboas picturatus, or the Imbabura Treefrog. It’s usually found along streams in closed-canopy forests and can be locally abundant, however generally uncommon." - http://www.thefeaturedcreature.com/2011/01/my-what-big-eyes-you-have-imbabura.html
The Costa Rican Variable Harlequin Toad, Atelopus Varius, also known as the clown frog, is a neo-tropical true toad from the family Bufonidae (Crump 1986). Once ranging from Costa Rica to Panama, A. Varius is now listed as critically endangered and has been reduced to a single remnant population near Quepos, Costa Rica (rediscovered in 2003) and is presumed to be extinct in Panama (IUCN, personal correspondence 2007).