Linnaeus's Two-toed Sloth

Linnaeus's Two-toed Sloth

Choloepus didactylus

Silhouette: Kai Caspar · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~20% · Possible
at Yasuní National Park
24 Verified sightings at Yasuní National Park From 2019 to 2026
94 Verified sightings across all 6 parks From 2019 to 2026
July Best month highest sighting rate
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Linnaeus's Two-toed Sloth

Linnaeus's two-toed sloth (Choloepus didactylus), also known as the southern two-toed sloth, unau, or Linne's two-toed sloth is a species of sloth from South America, found in Venezuela, Suriname, Guyana, French Guiana, Colombia, Ecuador, Peru, and Brazil north of the Amazon River. There is now evidence suggesting the species' range expands into Bolivia. It's the largest extant sloth species.

Males and females are the same size, growing to lengths of approximately 53 to 89 cm (21 to 35 in), not including the length of the tail, and weigh approximately 4 to 11 kg (9 to 24 lb). Their fur color ranges from a brownish yellow to a pale tone of brown, however, in the wild their fur sometimes has a green hue from algae that grows on their fur during the rainy season. Their belly fur is slightly lighter in color than the body and they have no undercoat. The belly hair is parted along the midline and flows towards the animals back (spine), the opposite direction that fur flows on most other mammals. Young sloths tend to have softer and darker fur than adults.

Sloths belong to the order Pilosa, which also includes anteaters. They belong to the super order Xenarthra... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
~30%
2 Yasuní National Park 🇪🇨 Ecuador
~20%
3 Anavilhanas National Park 🇧🇷 Brazil
Insufficient data
4 Brownsberg Nature Park 🇸🇷 Suriname
Insufficient data
5 Sierra de la Macarena National Park 🇨🇴 Colombia
Insufficient data
6 Amacayacu National Natural Park 🇨🇴 Colombia
Insufficient data

Quick answers

What are the chances of seeing a Linnaeus's Two-toed Sloth in Yasuní National Park?

About 20% of wildlife watchers report a Linnaeus's Two-toed Sloth sighting in Yasuní National Park, based on 24 verified sightings from GBIF citizen-science data.

When is the best time to see Linnaeus's Two-toed Sloth in Yasuní National Park?

July has the highest sighting rate for Linnaeus's Two-toed Sloth in Yasuní National Park in our monthly data.

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