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The species has a high adult survival rate and a long life span. [25] Like all true crocodilians, the American crocodile is a quadruped, with short, stocky legs; a long, powerful tail; and a scaly hide with rows of ossified scutes running down its back and tail. [26] Individuals can be identified by using multiple dorsal scute patterns. [27]
The brain volume of two adult crocodiles was 5.6 cm 3 for a spectacled caiman and 8.5 cm 3 for a larger Nile crocodile. [36] The largest crocodile ever held in captivity is a saltwater–Siamese hybrid named Yai (Thai: ใหญ่, meaning big; born 10 June 1972) at the Samutprakarn Crocodile Farm and Zoo, Thailand. This animal measures 6 m ...
Adult males are typically larger than females. The average adult Morelet's crocodile is about 2.1 m (6 ft 11 in), with a typical length range of 1.5 to 2.7 m (4 ft 11 in to 8 ft 10 in) (the lower measurement representing the mean total length of a female at sexual maturity which is attained at roughly 7–8 years of age in the wild).
An attack by a freshwater crocodile on a human was recorded at Barramundi Gorge (also known as Maguk) in Kakadu National Park and resulted in minor injuries; the victim managed to swim and walk away from the attack. He had apparently passed directly over the crocodile in the water.
Adults are all dark above and on their sides, while the underside is yellowish with black patches. [10] Some individuals living in the caves of Abanda, Gabon, displayed orange patches, apparently due to alkaline bat guano that erodes the skin of the crocodile. [11] Juveniles have a lighter brown banding on body and tails and yellow patterns on ...
The gharial (Gavialis gangeticus), also known as gavial or fish-eating crocodile, is a crocodilian in the family Gavialidae and among the longest of all living crocodilians. Mature females are 2.6 to 4.5 m (8 ft 6 in to 14 ft 9 in) long, and males 3 to 6 m (9 ft 10 in to 19 ft 8 in).
Lake Turkana in Kenya has one of the largest undisturbed Nile crocodile populations. Generally, the adult male Nile crocodile is between 3.5 and 5 m (11 ft 6 in and 16 ft 5 in) in length and weighs 225 to 750 kg (496 to 1,653 lb). However, specimens exceeding 6.1 m (20 ft) in length and 1,000 kg (2,200 lb) in weight have been recorded.
Nearby adults, presumably the parents, may warn young of predators or alert them to the presence of food. The range and quantity of vocalisations vary between species. Alligators and caimans are the noisiest while some crocodile species are almost completely silent. In some crocodile species, individuals "roar" at others when they get too close.