What are the chances of seeing a Harlequin Treefrog in Arenal Volcano National Park?
Likely
About 40% of wildlife watchers report a Harlequin Treefrog sighting in Arenal Volcano National Park on a given day, based on 264 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 6th most-seen of the 39 amphibians we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.