Description: The American crocodile is a highly fecund species (38 clutch of eggs; fecundity over 20 after 15 years old) with a high adult survival rate and long life span. Like all true crocodilians, the American crocodile is a quadruped, with four short, stocky legs; a long, powerful tail; and a scaly hide with rows of ossified scutes running down its back and tail. Its snout is elongated and includes a strong pair of jaws. A 10 feet 6 inches, 362 lbs. specimen had a bite force of 4,355 N (979 lbf). Its eyes have nictitating membranes for protection, along with lacrimal glands, which produce tears.

The nostrils, eyes, and ears are situated on the top of its head, so the rest of the body can be concealed underwater for surprise attacks. Camouflage also helps it prey on food. The snout is longer and narrower than that of the American alligator, but broader on average than that of the Orinoco crocodile. American crocodiles are also paler and more grayish than the relatively dark-hued American alligator. This crocodile species normally crawls on its belly, but it can also "high walk". Larger specimens can charge up to nearly 10 mph They can swim as fast as 20 mph by moving their bodies and tails in a sinuous fashion, but they cannot sustain this speed.

Adults have a uniform grayish-green coloration with white or yellow undersides, while juveniles have dark cross-banding on the tail and back.

New hatchlings are about 10+1/2 inches in length and about 2 oz. in mass. The average adult in the continental rivers can range from 9 feet 6 inches to 13 feet 1 inch long and weigh up to 842 lbs. in males, while females can range from 8 feet 2 inches to 9 feet 10 inches and weigh up to 381 lbs., the lower total length representing their average size at sexual maturity, the upper representing the expected upper size limit for the respective sex in most known populations. Common weights of adult American crocodiles in Florida may range from 110 to 550 lbs. with corresponding lengths of 8 feet 2 inches to 12 feet 8 inches. With extensive conservation efforts underway, there appears to be an increase in the number of large American crocodiles in Florida, some of the largest reportedly exceeding 13 feet 1 inches in length. Large adults of this species are capable of reaching 1,100–1,300 lbs. in weight, ranking it among the largest living crocodilians in the Neotropical realm. Body mass can be fairly variable in mature adults.

Habitat: The American crocodile is the most widespread of the four extant species of crocodiles from the Americas. They are saltwater-tolerant, and have thus been capable of colonizing a multitude of islands within the Caribbean, and on some coastal Pacific islands as well. They inhabit waters such as mangrove swamps, river mouths, fresh waters, and salt lakes, and can even be found at sea.

Range: In Flordia: The American crocodile's saline tolerance may have allowed it to colonize limited portions of the United States, particularly southern Florida. Contrary to popular misinformation, the presence of the American alligator is not the reason the American crocodile was unable to populate brackish waters north of Florida, but rather the climate, as crocodiles are less tolerant of cold.] Within the United States, the American crocodile's distribution is generally limited to the southern tip of Florida, though at least two have been found as far north as the Tampa Bay area. They are primarily found south of the latitude of Miami, in Everglades National Park, Florida Bay, Biscayne Bay, Dry Tortugas National Park and the Florida Keys. A sizable population occurs near Homestead, at the Turkey Point Nuclear Generating Station. Some individuals have been sighted in Palm Beach, Pinellas and Sarasota counties. Their range in Florida is the only place in the world where alligators and crocodiles coexist.

In the Greater Antilles (excluding Puerto Rico and Isla de la Juventud, where they are replaced by the introduced spectacled caiman, Martinique, southern Mexico (including the Yucatán Peninsula), Central America, and the South American countries of Colombia, Peru, Venezuela (including on Margarita Island), and Ecuador. The American crocodile is especially plentiful in Costa Rica.

Found in these States: FL

Diet: In Florida, bass, tarpon and especially mullet, large crabs, snakes, mammals that habit the riparian and coastal regions of the Everglades, such as opossums and raccoons appeared to be the primary prey of American crocodiles.

Reproduction: American crocodiles breed in late fall or early winter, engaging in drawn-out mating ceremonies in which males emit low-frequency bellows to attract females. Body size is more important than age in determining reproductive capabilities, and females reach sexual maturity at a length of about 9 feet 2 inches. In February or March, gravid females will begin to create nests of sand, mud, and dead vegetation along the water's edge. Nest location is crucial, and with the correct amount of vegetation, the eggs will develop within a small temperature range. Because sex determination is temperature-dependent in crocodilians, slight aberrations in temperature may result in all-male or all-female clutches, which would possibly harm the health of the population. About one month later, when it is time to lay, the female will dig a wide hole diagonally into the side of the nest and lay 30 to 70 eggs in it, depending on her size. After laying, the female may cover the eggs with debris or leave them uncovered. The white, elongated eggs are 3 inches long and 2 inches wide, with a number of pores in the brittle shell.

During the 75- to 80-day incubation period, the parents will guard the nest, often inhabiting a hole in the bank nearby. Females especially have been known to guard their nests with ferocity. But in spite of these precautions, American crocodile eggs sometimes fall prey to raccoons (arguably the most virulent natural predator of crocodilian nests in the Americas), coatis, foxes, skunks or other scavenging mammals (including coyotes in Mexico and American black bears in southern Florida), as well as large predatory ants, crabs and vultures. In Panama, green iguanas were seen to dig up and prey on American crocodile eggs occasionally, although in several cases were caught by the mother American crocodile and eaten. Crocodilian eggs are somewhat brittle, but softer than bird eggs. Despite noticeable nest guarding during egg incubation, guarding of young after hatching seems to be minimal in this species.

The hatchlings, which are 9+1/2 to 10+1/2 inches in length, have been reported to actively hunt prey within a few days of hatching. It is not uncommon for the mother to care for her young even weeks after they have hatched, remaining attentive to their calls and continuing to provide transportation. About five weeks after hatching, the young American crocodiles disband in search of their own independent lives. Most of them will not survive, being preyed upon by several types of raptorial birds, other reptiles, and large fishes (e.g., barred catfish, Atlantic tarpons, common snook and lemon sharks, boa constrictors, black spiny-tailed iguanas and spectacled caimans). Those that do survive grow rapidly, feeding on insects, fish and frogs. Additionally, some young American crocodiles feed on each other.

Status: Crocodylus acutus has undergone severe past declines due to overexploitation and habitat loss. There are conservation measures in most regions and established captive breeding programmes, however, habitat loss and illegal hunting remain ongoing threats. For these reasons, C. acutus has been assessed as Vulnerable under criterion A2cd with an inferred population decline of 30% over the last three generations (75 years) because of habitat quality decline and exploitation.

Taxonomy: