CreatureData

Pale-throated sloth

Bradypus tridactylus Linnaeus, 1758

LCLeast Concernmammals

The pale-throated sloth (Bradypus tridactylus) is a species in the family Bradypodidae, order Pilosa. Recorded adults weigh 3.59 kg to 4.07 kg and live up to 25.8 years. Its IUCN Red List status is Least Concern.

Pale-throated sloth (Bradypus tridactylus)
Photo: Cesar Augusto Chirosa Horie · CC BY-SA 4.0 · Wikimedia Commons

Quick facts about the pale-throated sloth

Weight
3.59 kg – 4.07 kgsrc for Weight
Length
Not recorded
Lifespan
25.8 yearssrc for Lifespan
Diet
Herbivoresrc for Diet
Longest recorded lifespan
40 years
Main food
Not recorded
Habitat
Not recorded
Gestation
127 dayssrc for Gestation
Young per litter or clutch
1src for Young per litter or clutch
Age at maturity
19.8 months – 3 yearssrc for Age at maturity
Litters or clutches a year
1src for Litters or clutches a year
Active
Day and night (cathemeral)src for Active
Lifestyle
Arborealsrc for Lifestyle
Conservation status
Least Concern (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the pale-throated sloth live?

Not recorded

What is the pale-throated sloth?

Quoted from WikipediaCC BY-SA 4.0

The pale-throated sloth (Bradypus tridactylus), occasionally known as the ai (), is a species of three-toed sloth that inhabits tropical rainforests in northern South America.

It is similar in appearance to, and often confused with, the brown-throated sloth, which has a much wider distribution. Genetic evidence has been interpreted to suggest the two species diverged only around 400,000 years ago, although the most recent evidence indicates the split was closer to 6 million years.

From the Wikipedia article “Pale-throated sloth” (en.wikipedia.org/w/index.php?title=Pale-throated_sloth&oldid=1383211135), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

Is the pale-throated sloth endangered?

The pale-throated sloth is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.

How is the pale-throated sloth classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderPilosa
  5. familyBradypodidae
  6. genusBradypus
  7. SpeciesBradypus tridactylus Linnaeus, 1758

Synonyms Acheus ai, Arctopithecus blainvillii, Arctopithecus flaccidus, Arctopithecus flaccidus dysonii, Arctopithecus flaccidus smithii, Bradypus cuculliger, Bradypus cummunis, Bradypus gularis

Other names and names in other languages (50)
  • Pale-throated three-fingered slothEnglish
  • Pale-throated three-toed slothEnglish
  • Pale-throated three-toed slothEnglish
  • Pale-throated three-toed slothEnglish
  • كسلان شاحب الحنجرةArabic
  • كسلان ثلاثي الأصابع شاحب الحنجرةArabic
  • PerezosoAragonese
  • Трипръст ленивецBulgarian
  • Lezireg tri bizBreton
  • Peresós de coll pàl·lidCatalan
  • lenochod tříprstýCzech
  • Lysstrubet dovendyrDanish
  • Weißkehl-FaultierGerman
  • DreifingerfaultierGerman
  • DreizehenfaultierGerman
  • Weißkehl-Dreifinger-FaultierGerman
  • Ωχρόλαιμος ΒραδύποδαςGreek
  • Oso perezosoSpanish
  • Perezoso de garganta pálidoSpanish
  • Hiru hatzeko nagiBasque
  • bahianlaiskiainenFinnish
  • KolmivarvaslaiskiainenFinnish
  • Mouton paresseuxFrench
  • Paresseux à gorge claireFrench
  • Paresseux à trois doigtsFrench
  • עצלן חיוור-גרוןHebrew
  • Troprsti ljenivacCroatian
  • Háromujjú lajhárHungarian
  • Bradipo tridattiloItalian
  • ノドジロミユビナマケモノJapanese
  • 엷은목세발가락나무늘보Korean
  • Trefingret DovendyrNorwegian Bokmål
  • Drievingerige LuiaardDutch
  • Leniwiec trójpalczastyPolish
  • PreguiçaPortuguese
  • AiPortuguese
  • Bicho-preguiçaPortuguese
  • Preguiça-de-BentinhoPortuguese
  • Preguiça-de-Garganta-AmarelaPortuguese
  • Preguiça-do-NortePortuguese
  • Трёхпалый ленивецRussian
  • Leňoch trojprstýSlovak
  • triprsti lenivecSlovenian
  • Тропрсти лењивацSerbian
  • Piki silousrm
  • SonloiriSranan Tongo
  • Tretåig sengångareSwedish
  • Üç parmaklı tembelhayvanTurkish
  • 三趾樹懶Chinese
  • 白喉三趾樹懶Chinese

Catalogue of LifeWikipediaiNaturalistTAXREFWikidataIUCN Red List

Relatives of the pale-throated sloth

Other species in the same genus Bradypus.

ComparePale-throated sloth vs Brown-throated slothPale-throated sloth vs Pygmy three-toed slothPale-throated sloth vs Northern maned sloth

Common questions

Answered only where our data holds the answer.

How big is the pale-throated sloth?

An adult pale-throated sloth weighs 3.59 kg – 4.07 kg, according to values recorded on Wikidata.

Is the pale-throated sloth endangered?

The pale-throated sloth is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.

How long does the pale-throated sloth live?

The pale-throated sloth has a recorded lifespan of 25.8 years.

How long is the pale-throated sloth pregnant?

The recorded gestation period is 127 days.

What kind of animal is the pale-throated sloth?

The pale-throated sloth (Bradypus tridactylus) belongs to the family Bradypodidae in the order Pilosa.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Pale-throated sloth (Bradypus tridactylus). Retrieved from https://creaturedata.com/animals/pale-throated-sloth

MLA

“Pale-throated sloth (Bradypus tridactylus).” CreatureData, 2026, https://creaturedata.com/animals/pale-throated-sloth.

BibTeX
@misc{pale_throated_sloth_2026,
  title = {Pale-throated sloth (Bradypus tridactylus)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/pale-throated-sloth},
  note = {Data as of 2026-11-11}
}