Costa Rica · region

Boundary from OpenStreetMap. The counts below cover the park and roughly 16 km around it.
10 km zone · high confidence · updated 41 days ago
Species with at least one recorded territory whose grid cell centres fall in or near Arenal. Cells are up to 25 km across, so an animal counted here may have been recorded just outside the boundary. This is not a park checklist, and the counts follow where people look as much as what lives there.

Morpho helenor
Electric blue flashes down forest paths, impossible to photograph in flight.

Iguana iguana
Basking in the crowns of trees along slow rivers.

Ramphastos sulfuratus
Improbable bill, croaking calls above the canopy.

Alouatta palliata
The sound of the neotropics at first light.

Agalychnis callidryas
Night walks after rain, leaves at eye level.

Pharomachrus mocinno
The green-and-scarlet emblem of the cloud forest, tail streaming behind.

Ara macao
Pairs streaking above the beach almond trees at Carara.

Oophaga pumilio
Tiny, loud, and unmistakably red on the forest floor.

Bradypus variegatus
Slow-motion cecropia specialists: look up, then look up again.

Cebus imitator
Clever, curious troops. Do not feed them, ever.

Panthera onca
Tracks along the beach at Corcovado; the animal itself is a gift.
Chances by species: Blue Morpho, Green Iguana, Keel-billed Toucan, Mantled Howler Monkey, Red-eyed Tree Frog, Resplendent Quetzal, Scarlet Macaw, Strawberry Poison-dart Frog, Three-toed Sloth, White-faced Capuchin, Jaguar
The species with the most open occurrence records in and around Arenal, among those a photograph exists for. Most recorded is not most numerous: it rewards animals that are common, conspicuous and live where people go.

Turdus grayi

Pitangus sulphuratus

Coragyps atratus

Thraupis episcopus

Amazilia tzacatl

Ramphocelus passerinii

Tyrannus melancholicus

Cyanocorax morio

Cathartes aura

Psarocolius montezuma

Myiozetetes similis

Penelope purpurascens