It takes a trained eye to spot tiny amphibians like frog. Thankfully, I was led through the Ecuadorian cloud forest by local herpetologists, who spotted this beautiful Executioner Clown Frog by small pond. Active at night, this male will sang his song in the darkness to let other frogs and potential mates know of his presence. Amphibians are among the fastest declining animal groups in the world, due to their sensitivity to environmental alterations and contaminations.