Reptilia · Crocodylia
Crocodylus acutusCuvier, 1807
American crocodile
Photograph by Carlos Domínguez-Rodríguez, CC BY, via iNaturalist
A nocturnal, meat-eating crocodilian from the Neotropic region, reaching 610 cm nose to tail.
Reptilia › Crocodylia › Crocodylidae › Crocodylus
- Grows to
- 6100mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Nocturnal
- Lives up to
- 100years
What is known
32 sourced facts, each taken from a named scientific dataset. How to read these.
Cited from a dataset unless a row is marked otherwise.
Standing in the world
- Conservation status
- Vulnerable
- Population trend
- Increasing
The animal itself
- Colour on the back
- Brown
- Pattern on the back
- Uniform
- Pupil
- Vertical slit
- Venomous
- No
- Fangs
- None
- Longest recorded life
- 100years
- Body temperature when active · measured in the wild
- 28.75°C84 °F
mean body temperature of active individuals in nature
Size
- Length nose to tail · greatest recorded
- 6100mm20 ft
- Largest female · snout to vent
- 3800mm12 ft 6 in
- Body mass · greatestcomputed
- 539,586g1190 lb
- Body mass · a typical adult
- 76,700g169 lb
- Body mass at hatching
- 103.4g3.6 oz
snout-vent length; the source column mixes this with straight carapace length
largely converted from length by allometry in the source
AnAge rates this record "acceptable"
How it lives
- Diet
- Carnivorous
- How it hunts
- Active foraging
- Active
- Nocturnal
- Where it lives
- Arboreal, saxicolous, terrestrial
- Habitat
- Forest, Wetlands
- Region
- Neotropic
- Highest it lives · above sea level
- 1200m
Amphibians, invertebrates, fish
Breeding
- Reproduction
- Oviparous
- Sex decided by
- Temperature
- Average clutch
- 40eggs
- Eggs or young per clutch
- 30–70eggs
- Egg length
- 75mm3 in
- Egg width
- 50mm2 in
- Age at first breeding · female
- 3652days
Naming and history
- Subspecies
- No
- Described by
- Cuvier
- Moved to another genus · since it was first described
- No
- Described in
- 1807
Keeping one
American crocodile is assessed as Vulnerable on the IUCN Red List. Species at risk in the wild are often covered by CITES and by national law, which decide what may be bought, sold, moved across a border or kept at all — and captive-bred and wild-caught animals are usually treated differently. Check the rules where you are before acquiring one. Nothing below is a judgement about keeping this species; it is what a published welfare standard says about space, and what the animal itself was measured doing.
Active animals measured in the wild averaged 84 °F (28.8 °C).
Mean body temperature of active individuals measured in nature. A measurement of the animal, not a setting for a thermostat.
Feeding
A prey item should be no wider than the space between the animal's eyes.
Widely used across reptile husbandry references. The stated reason is that the gap approximates the width of the throat, so wider prey is associated with impaction. This is established practice, not a measurement.
24438kJ per day
Worked out for an animal of 539,586 g, the heaviest recorded for American crocodile — so it is the top of the range, not a figure for a particular animal. Weigh yours and the number will be lower.
An upper estimate, not a feeding target, and not veterinary advice. The equation covers only what an animal burns staying alive, so a growing, gravid or recovering animal needs more — and it was measured on wild animals, which move far more than one in an enclosure. Body condition and a vet who knows the species are what a feeding decision should rest on. Where this comes from.
Morphs
1 with peer-reviewed genetics behind them, 0 resting on breeder consensus. Most references present both with the same confidence.
- Skin colourpeer reviewed
- Occurrence of atypical coloration phenotype in Crocodylus acutus of the Cañón del Sumidero National Park, Chiapas, Mexico. — Zootaxa 2026
What nobody knows
These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.
- — Still living
- — Length snout to vent · greatest recorded
- — Length snout to vent · adult female mean
- — Length snout to vent · adult male mean
- — Length snout to vent · adult mean
- — Female length · mean, nose to tail
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Hatchling length · snout to vent
- — Hatchling length · nose to tail
- — Largest juvenile · snout to vent
- — Largest juvenile · shell length
- — Body mass · adult female, mean
- — Preferred body temperature · chosen in a laboratory gradient
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How the young develop
- — Gestation or incubation
- — Mean clutch · smallest reported
- — Mean clutch · largest reported
- — Clutches in a year
- — Clutches a year · fewest
- — Clutches a year · most
- — First breeds from · youngest recorded
- — First breeds by · oldest recorded
- — Hatchling length · smallest recorded
- — Hatchling length · largest recorded
- — Mature from · youngest recorded
- — Mature by · oldest recorded
- — Size at maturity · smallest recorded
- — Size at maturity · largest recorded
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Limbs
- — Status assessed · the year the Red List last looked
- — Red List criteria
- — Biome
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Suborder
- — Infraorder
- — Type locality
- — Active in
- — Mainland or island
- — Lowest it lives · above sea level
- — Range size
Others in Crocodylidae
Take this data
Everything on this page is available as data under CC BY 4.0 — use it freely, credit it, no permission needed.
This species as JSON · the whole dataset
Cite this page
The Reptile & Amphibian Encyclopedia (2026). Crocodylus acutus. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/crocodylus-acutus
@misc{crocodylus_acutus_2026,
title = {Crocodylus acutus},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/crocodylus-acutus}
}Sources
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.
- AnAge, Human Ageing Genomic Resources (de Magalhães et al.), used under CC BY 3.0.
- Catalogue of Life (dataset 3LR), used under CC BY.