Anavilhanas National Park

🇧🇷 Brazil

🐬 Boto River Dolphin Sanctuary
🌍 #179 Global · 3.6 ★★★★★ ★★★★★ #30 in South America #85 in Tropical Forest
Brazil, Brazil 1314 spp. recorded

Anavilhanas National Park is a vast riverine protected area in the Brazilian Amazon, featuring a massive labyrinth of freshwater channels, flooded forests, and countless floating islands. This wetland labyrinth stands apart from solid-land reserves through its constantly shifting aquatic pathways and dense vegetation shaped by rising and falling river levels.

-2.270° S   60.906° W

Wildlife

SIGHTING PROBABILITY Share of citizen-science records from the park that report this species
<5%
Rare5–20%
With luck20–40%
Possible40–70%
Likely>70%
Very likely
ACTIVITY PATTERN
☀️ Diurnal 🌙 Nocturnal 🌅 Crepuscular ☀️🌙 Day & Night

⭐ Iconic Species

Boto ★
EN

Boto

☀️ Diurnal Mammal

Inia geoffrensis

50–60% · Likely
Black Caiman ★
LC

Black Caiman

🌅 Crepuscular Reptile

Melanosuchus niger

40–50% · Likely
Brown-throated Sloth ★
LC Endemic

Brown-throated Sloth

☀️ Diurnal Mammal

Bradypus variegatus

30–40% · Possible
Garden Tree Boa ★
LC

Garden Tree Boa

🌙 Nocturnal Reptile

Corallus hortulana

30–40% · Possible

📊 Most Spotted

Yellow-rumped Cacique
LC

Yellow-rumped Cacique

☀️ Diurnal Bird

Cacicus cela

50–60% · Likely
White-throated Toucan
LC

White-throated Toucan

☀️ Diurnal Bird

Ramphastos tucanus

50–60% · Likely
Black Vulture
LC

Black Vulture

☀️ Diurnal Bird

Coragyps atratus

50–60% · Likely
Festive Parrot
LC

Festive Parrot

☀️ Diurnal Bird

Amazona festiva

40–50% · Likely
Tropical Kingbird
LC

Tropical Kingbird

☀️ Diurnal Bird

Tyrannus melancholicus

40–50% · Likely
Screaming Piha
LC

Screaming Piha

☀️ Diurnal Bird

Lipaugus vociferans

30–40% · Possible
Green-backed Trogon
LC

Green-backed Trogon

☀️ Diurnal Bird

Trogon viridis

30–40% · Possible
Swallow-wing Puffbird
LC

Swallow-wing Puffbird

☀️ Diurnal Bird

Chelidoptera tenebrosa

30–40% · Possible
Silver-beaked Tanager
LC

Silver-beaked Tanager

☀️ Diurnal Bird

Ramphocelus carbo

30–40% · Possible
Ringed Kingfisher
LC

Ringed Kingfisher

☀️ Diurnal Bird

Megaceryle torquata

30–40% · Possible
Green Iguana
LC

Green Iguana

☀️ Diurnal Reptile

Iguana iguana

30–40% · Possible
Great Kiskadee
LC

Great Kiskadee

☀️ Diurnal Bird

Pitangus sulphuratus

30–40% · Possible

⭐ Iconic Species

Boto ★
EN

Boto

☀️ Diurnal Mammal

Inia geoffrensis

50–60% · Likely
Brown-throated Sloth ★
LC Endemic

Brown-throated Sloth

☀️ Diurnal Mammal

Bradypus variegatus

30–40% · Possible

📊 Most Spotted

Humboldt’s Squirrel Monkey
LC

Humboldt’s Squirrel Monkey

☀️ Diurnal Mammal

Saimiri cassiquiarensis

20–30% · Possible
Common Squirrel Monkey
LC

Common Squirrel Monkey

☀️ Diurnal Mammal

Saimiri sciureus

20–30% · Possible
Noisy Night Monkey
LC

Noisy Night Monkey

☀️ Diurnal Mammal

Aotus vociferans

10–20% · With luck
Linnaeus's Two-toed Sloth
LC

Linnaeus's Two-toed Sloth

☀️🌙 Day & Night Mammal

Choloepus didactylus

Insufficient data
🐒 No photo available
LC

Greater Dog-like Bat

🌙 Nocturnal Mammal

Peropteryx kappleri

Insufficient data
Tucuxi
EN

Tucuxi

☀️ Diurnal Mammal

Sotalia fluviatilis

10–20% · With luck
Proboscis Bat
LC

Proboscis Bat

☀️ Diurnal Mammal

Rhynchonycteris naso

10–20% · With luck
Pale-throated Sloth
LC

Pale-throated Sloth

☀️🌙 Day & Night Mammal

Bradypus tridactylus

Insufficient data
Lesser Dog-like Bat
LC

Lesser Dog-like Bat

☀️ Diurnal Mammal

Peropteryx macrotis

Insufficient data
Brown Capuchin
Endemic

Brown Capuchin

☀️ Diurnal Mammal

Sapajus apella

Insufficient data
Giant Otter
EN

Giant Otter

☀️ Diurnal Mammal

Pteronura brasiliensis

10–20% · With luck
🐒 No photo available
LC

Chestnut Sac-winged Bat

☀️🌙 Day & Night Mammal

Cormura brevirostris

Insufficient data

📊 Most Spotted

Yellow-rumped Cacique
LC

Yellow-rumped Cacique

☀️ Diurnal Bird

Cacicus cela

50–60% · Likely
White-throated Toucan
LC

White-throated Toucan

☀️ Diurnal Bird

Ramphastos tucanus

50–60% · Likely
Black Vulture
LC

Black Vulture

☀️ Diurnal Bird

Coragyps atratus

50–60% · Likely
Festive Parrot
LC

Festive Parrot

☀️ Diurnal Bird

Amazona festiva

40–50% · Likely
Tropical Kingbird
LC

Tropical Kingbird

☀️ Diurnal Bird

Tyrannus melancholicus

40–50% · Likely
Screaming Piha
LC

Screaming Piha

☀️ Diurnal Bird

Lipaugus vociferans

30–40% · Possible
Green-backed Trogon
LC

Green-backed Trogon

☀️ Diurnal Bird

Trogon viridis

30–40% · Possible
Swallow-wing Puffbird
LC

Swallow-wing Puffbird

☀️ Diurnal Bird

Chelidoptera tenebrosa

30–40% · Possible
Silver-beaked Tanager
LC

Silver-beaked Tanager

☀️ Diurnal Bird

Ramphocelus carbo

30–40% · Possible
Ringed Kingfisher
LC

Ringed Kingfisher

☀️ Diurnal Bird

Megaceryle torquata

30–40% · Possible
Great Kiskadee
LC

Great Kiskadee

☀️ Diurnal Bird

Pitangus sulphuratus

30–40% · Possible
Blue-headed Parrot
LC

Blue-headed Parrot

☀️ Diurnal Bird

Pionus menstruus

30–40% · Possible

⭐ Iconic Species

Black Caiman ★
LC

Black Caiman

🌅 Crepuscular Reptile

Melanosuchus niger

40–50% · Likely
Garden Tree Boa ★
LC

Garden Tree Boa

🌙 Nocturnal Reptile

Corallus hortulana

30–40% · Possible

📊 Most Spotted

Green Iguana
LC

Green Iguana

☀️ Diurnal Reptile

Iguana iguana

30–40% · Possible
Amazon Racerunner
LC

Amazon Racerunner

☀️ Diurnal Reptile

Ameiva ameiva

30–40% · Possible
Common Caiman
LC

Common Caiman

☀️ Diurnal Reptile

Caiman crocodilus

20–30% · Possible
Trinidad Gecko
LC

Trinidad Gecko

☀️🌙 Day & Night Reptile

Gonatodes humeralis

10–20% · With luck
Tropical House Gecko
LC

Tropical House Gecko

🌙 Nocturnal Reptile

Hemidactylus mabouia

10–20% · With luck
Diving Lizard
LC

Diving Lizard

☀️🌙 Day & Night Reptile

Uranoscodon superciliosus

Insufficient data
Red-tailed Boa
LC

Red-tailed Boa

☀️ Diurnal Reptile

Boa constrictor

10–20% · With luck
Barba Amarilla
LC

Barba Amarilla

☀️🌙 Day & Night Reptile

Bothrops atrox

10–20% · With luck
Yellow-headed Sideneck
VU

Yellow-headed Sideneck

☀️ Diurnal Reptile

Podocnemis unifilis

10–20% · With luck
Forest Whiptail
LC

Forest Whiptail

☀️ Diurnal Reptile

Kentropyx pelviceps

Insufficient data
Green Vine Snake
LC

Green Vine Snake

☀️ Diurnal Reptile

Oxybelis fulgidus

Insufficient data
Twist-neck Turtle

Twist-neck Turtle

☀️🌙 Day & Night Reptile

Platemys platycephala

Insufficient data

📊 Most Spotted

Eastern Cane Toad
LC

Eastern Cane Toad

☀️🌙 Day & Night Amphibian

Rhinella marina

30–40% · Possible
Smoky Jungle Frog
LC

Smoky Jungle Frog

🌙 Nocturnal Amphibian

Leptodactylus pentadactylus

10–20% · With luck
South American Common Toad
LC

South American Common Toad

☀️🌙 Day & Night Amphibian

Rhinella margaritifera

Insufficient data
Giant Broad-headed Treefrog
LC

Giant Broad-headed Treefrog

🌙 Nocturnal Amphibian

Osteocephalus taurinus

Insufficient data
Rusty Tree Frog
LC

Rusty Tree Frog

🌙 Nocturnal Amphibian

Boana boans

Insufficient data
Boatman frog
LC

Boatman frog

🌙 Nocturnal Amphibian

Trachycephalus resinifictrix

Insufficient data
Toad-wife Tree Frog
LC

Toad-wife Tree Frog

☀️🌙 Day & Night Amphibian

Trachycephalus cunauaru

Insufficient data
Loreto White-lipped Frog
LC

Loreto White-lipped Frog

🌙 Nocturnal Amphibian

Leptodactylus rhodomystax

Insufficient data
Snouted Toad
LC

Snouted Toad

☀️🌙 Day & Night Amphibian

Rhinella proboscidea

Insufficient data
Three-striped Poison Frog
LC

Three-striped Poison Frog

☀️🌙 Day & Night Amphibian

Ameerega trivittata

Insufficient data
Red Snouted Tree Frog
LC

Red Snouted Tree Frog

🌙 Nocturnal Amphibian

Scinax ruber

Insufficient data
Dwarf Tree Frog
LC

Dwarf Tree Frog

🌙 Nocturnal Amphibian

Dendropsophus nanus

Insufficient data

Animal Events

🦌

Brown-throated Sloth Canopy Foraging in Flooded Igapó

Apr

Rising floodwaters force sloths to navigate dense upper canopy branches, where they actively feed on emergent tender leaves and fruit.

Brown-throated Sloth
LC Endemic

Brown-throated Sloth

☀️ Diurnal Mammal

Bradypus variegatus

30–40% · Possible
🦌

Boto River Dolphin Feeding and Low Water Concentration

Aug

As dry season water levels drop, fish concentrate in shrinking channels, drawing high numbers of Boto river dolphins to feed actively near sandbanks and river edges.

Tucuxi
EN

Tucuxi

☀️ Diurnal Mammal

Sotalia fluviatilis

10–20% · With luck
Boto
EN

Boto

☀️ Diurnal Mammal

Inia geoffrensis

50–60% · Likely
🦎

Black Caiman Dry Season Basking and Nesting

Mar

Exposed sandbanks and drying mudflats during early seasonal changes provide optimal environments for large caimans to bask and prepare nesting sites.

Common Caiman
LC

Common Caiman

☀️ Diurnal Reptile

Caiman crocodilus

20–30% · Possible
Black Caiman
LC

Black Caiman

🌅 Crepuscular Reptile

Melanosuchus niger

40–50% · Likely

Sighting Calendar

Chance of spotting each species, month by month

Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Species Total
30–40
30–40
40–50
40–50
40–50
40–50
40–50
50–60
30–40
30–40
40–50
30–40
Boto
40–50
70–80
30–40
50–60
50–60
40–50
40–50
70–80
30–40
10–20
50–60
50–60
Black Caiman
30–40
20–30
40–50
40–50
10–20
30–40
50–60
10–20
30–40
60–70
10–20
30–40
Brown-throated Sloth
30–40
5–10
50–60
40–50
5–10
10–20
40–50
20–30
40–50
20–30
5–10
5–10
Garden Tree Boa
30–40
10–20
50–60
10–20
10–20
5–10
20–30
40–50
30–40
10–20
40–50
30–40
Yellow-rumped Cacique
50–60
50–60
60–70
60–70
60–70
70–80
60–70
60–70
40–50
50–60
70–80
40–50
White-throated Toucan
50–60
30–40
60–70
50–60
70–80
80–90
50–60
60–70
30–40
60–70
70–80
40–50
Black Vulture
30–40
30–40
40–50
50–60
50–60
40–50
60–70
70–80
50–60
30–40
50–60
30–40
Festive Parrot
40–50
30–40
40–50
50–60
50–60
40–50
30–40
40–50
50–60
40–50
50–60
40–50
Tropical Kingbird
20–30
30–40
20–30
40–50
60–70
40–50
60–70
60–70
40–50
20–30
20–30
30–40
Screaming Piha
30–40
30–40
40–50
30–40
30–40
50–60
30–40
60–70
40–50
20–30
30–40
20–30
Green-backed Trogon
20–30
20–30
20–30
20–30
40–50
50–60
30–40
50–60
50–60
30–40
30–40
10–20
Swallow-wing Puffbird
30–40
20–30
20–30
40–50
30–40
30–40
30–40
60–70
30–40
30–40
40–50
30–40
Silver-beaked Tanager
40–50
30–40
20–30
20–30
40–50
30–40
40–50
60–70
30–40
30–40
5–10
20–30
Ringed Kingfisher
30–40
20–30
40–50
30–40
40–50
20–30
20–30
20–30
30–40
40–50
60–70
50–60
Green Iguana
30–40
30–40
50–60
30–40
20–30
40–50
20–30
30–40
5–10
40–50
40–50
20–30
Great Kiskadee
20–30
10–20
20–30
40–50
60–70
40–50
20–30
40–50
20–30
20–30
30–40
30–40
Animal Events
🦌 Boto River Dolphin Feeding and Low Water Concentration
🦌 Brown-throated Sloth Canopy Foraging in Flooded Igapó
🦎 Black Caiman Dry Season Basking and Nesting

Sighting Zones

Warm areas are where all species together are recorded most, so they track where people go as much as where animals are. For one species, see the map on its own page.

0.0 ★★★★★ ★★★★★ Good
🐬 Boto River Dolphin Sanctuary

Where Wildlife Score

How good is this park for seeing wildlife?
🦜

Biodiversity

Excellent

How rich is the wildlife?

4.3 Global avg
4.7 ★★★★★ ★★★★★
Species by taxon
🦅 Birds
760
🐒 Mammals
237
🦎 Reptiles
207
🐸 Amphibians
110
1314 Total Species
850 Global average across 296 parks
34 Threatened 45 Endemic
🔭

Sighting

Good

How likely to see animals?

3.6 Global avg
3.1 ★★★★★ ★★★★★
🎯
Top-12 Avg Probability
62% Global avg
45%
📊
Coverage (353 species at ≥5% of 1314 in the inventory)
24% Global avg
27%
🔀
Taxon variety in top 12 (10 bird, 1 mammal, 1 reptile)
46% Global avg
39%
🔭
Species per 10 outings (distinct species a visitor would meet over 10 outings — effort held equal across parks)
134 Global avg
220
🌟
Iconic-group species (≥15%) (every species from the 19 iconic groups — monkeys, cats, toucans, macaws, sloths, crocodilians… — not just the 4 highlighted above)
15 Global avg
20
⭐
High-prob species (>40%)
27 Global avg
7

Quick answers

What animals can you see in Anavilhanas National Park?

The most likely sightings are Yellow-rumped Cacique (seen by 50–60% of wildlife watchers), White-throated Toucan (seen by 50–60% of wildlife watchers), Boto (seen by 50–60% of wildlife watchers), Black Vulture (seen by 50–60% of wildlife watchers), Festive Parrot (seen by 40–50% of wildlife watchers) — among 1314 recorded vertebrate species, based on citizen-science data from GBIF.

When is the best time to visit Anavilhanas National Park for wildlife?

August has the highest combined sighting rate for the park's top species in our month-by-month GBIF data. The full sighting calendar on this page shows each species' best months.

Can you see Boto in Anavilhanas National Park?

Yes — about 52% of wildlife watchers report a Boto sighting in Anavilhanas National Park, based on 30 days of visitor records from GBIF citizen-science data.

Can you see Black Caiman in Anavilhanas National Park?

Yes — about 41% of wildlife watchers report a Black Caiman sighting in Anavilhanas National Park, based on 18 days of visitor records from GBIF citizen-science data.

Can you see Brown-throated Sloth in Anavilhanas National Park?

Yes — about 32% of wildlife watchers report a Brown-throated Sloth sighting in Anavilhanas National Park, based on 24 days of visitor records from GBIF citizen-science data.

Can you see Garden Tree Boa in Anavilhanas National Park?

Yes — about 32% of wildlife watchers report a Garden Tree Boa sighting in Anavilhanas National Park, based on 12 days of visitor records from GBIF citizen-science data.

⚖️

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