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Photo: Jovem Rural · CC BY 2.0

SpeciesAlligatoridae
Reptiles

🐊Black caiman

Melanosuchus niger (Spix, 1825)

The black caiman is a crocodilian reptile endemic to South America. With a maximum length of around 5 to 6.5 m and a mass of over 450 kg (1,000 lb), it is the largest living species of the family Alligatoridae, and the third-largest crocodilian in the Neotropical realm. True to its common and scientific names, the black caiman has a dark greenish-black coloration as an adult. In some individuals, the pigmentation can appear almost jet-black. It has grey to brown banding on the lower jaw; juveniles have a more vibrant coloration compared to adults, with prominent white-pale yellow banding on the flanks that remains present well into adulthood. The banding on young helps with camouflage by breaking up their body outline, on land or in water, in an effort to avoid predation. The morphology is quite different from other caimans but the bony ridge that occurs in other caimans is present. The head is large and heavy, an advantage in catching larger prey. Like all crocodilians, caimans are long, squat creatures, with big jaws, long tails and short legs. They have thick, scaled skin, and their eyes and noses are located on the tops of their heads. This enables them to see and breathe while the rest of their body is underwater.

Text: Wikipedia, CC BY-SA 4.0.

Videos
6
Photos
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Measurements
8
vs you
≈ 1.3× your weight
Conservation status
LCLeast concern

IUCN Red List assessment, 2025.

Population trendIncreasing
Key measurements
Body mass
82 kg
Body length
6 m
Shoulder height
not recorded
Top speed
not recorded
Bite force
not recorded
Maximum lifespan
40 years
All measurements ↓
Facts and figures

Everything we know about the Black caiman

Typical adult figures. Where a value is an estimate rather than a measurement, it says so.

Body mass
82 kgrecord 883 kg · ReptTraits
AnAge
Details ↓

data quality: acceptable

Record: largest individual on record

Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0

Body length
6 mmaximum recorded
ReptTraits
Details ↓

Source: ReptTraits · v1.2 (Oskyrko et al. 2024) · CC BY 4.0

Maximum lifespan
40 yearsrecord 40 years · ReptTraits
AnAge
Details ↓

data quality: acceptable

Record: largest individual on record

Source: AnAge · AnAge build 15, 2023-07-03 (HAGR) · CC BY 3.0

Diet
Carnivorous
ReptTraits
Details ↓

Source: ReptTraits · v1.2 (Oskyrko et al. 2024) · CC BY 4.0

Activity cycle
Nocturnal
ReptTraits
Details ↓

Source: ReptTraits · v1.2 (Oskyrko et al. 2024) · CC BY 4.0

Foraging mode
ACT
ReptTraits
Details ↓

Source: ReptTraits · v1.2 (Oskyrko et al. 2024) · CC BY 4.0

Venomous
No
ReptTraits
Details ↓

Source: ReptTraits · v1.2 (Oskyrko et al. 2024) · CC BY 4.0

Volume l
82 Laverage
Details ↓

Body mass at ~1.0 kg/L, the density of vertebrate tissue.

average = a mean across sexes or species in a group.

Not recorded for Black caiman yet: shoulder height, top speed, bite force.

Where it sits

Family tree

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›classCrocodylia
  4. ›familyAlligatoridae
  5. ›genusMelanosuchus
  6. ›speciesMelanosuchus niger
Full lineage
  1. orderSauria
  2. familyAlligatoridae
  3. subfamilyCaimaninae
  4. genusMelanosuchus
All 11 branches ↓
  1. kingdomMetazoa
  2. phylumChordata
  3. subphylumCraniata
  4. subphylumVertebrata
  5. superclassGnathostomata
  6. superclassSarcopterygii
  7. superclassTetrapoda
  8. orderSauria
  9. familyAlligatoridae
  10. subfamilyCaimaninae
  11. genusMelanosuchus
More

More about the Black caiman

In other languages
Melanosuchus niger (es), caïman noir (fr), Kajman czarny (pl), קיימן שחור אמאזוני (he), fekete kajmán (hu), Melanosuchus niger (it) … and 21 more languages

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