Kaeng Krachan Province, Thailand. February 27, 2016
I saw several of these small frogs on the ground while walking streams at night in Kaeng Krachan National Park at night. In the top photo, the frog is displaying a form of the unken reflex, a defensive posture.
My Flickr album for this species is here.
My Thailand Flickr album is here.
HerpMapper records for this species are here.