Alligators are found in the low coast region and are especially numerous in the Nueces river.
In Central and South America alligators are represented by five species of the genus Caiman, which differs from Alligator by the absence of a bony septum between the nostrils, and the ventral armour is composed of overlapping bony scutes, each of which is formed of two parts united by a suture.
Alligators and crocodiles are numerous in the lagoons and rivers of the coast and the iguana is to be found everywhere throughout the tropical lowlands, the large black Ctenosura acanthinurus being partly arboreal in habit when full grown.
Other species, especially the alligators, make a very large nest of leaves, twigs and humus, scraping together a mound about a yard high and two or more yards in diameter.
Every bayou contains alligators; and reptiles of various species, such as turtles, lizards, horned toads, rattlesnakes and moccasins are abundant.
Hippopotami are found on the coast, and alligators are common in the rivers and lagoons of the low country.
Other industries of a desultory character include the collection of archil, or Spanish moss, on the western side of the Californian peninsula, hunting herons for their plumes and alligators for their skins, honey extraction (commonly wild honey), and the gathering of cochineal and ni-in insects.
That in the palace gardens flowers from the tierra caliente were transplanted, and water-fowl bred near fresh and salt pools fit for each kind, that all kinds of birds and beasts were kept in well-appointed zoological gardens, where there were homes even for alligators and snakes - all this testifies to a cultivation of natural history which was really beyond the European level of the time.
Capybaras can be easily tamed; numbers are killed on land by jaguars and in the water by caimans - the alligators of South America.
The banks are forested throughout, and the river is infested by numerous alligators, so ferocious that they attack canoes.
Especially in alligators the upper teeth overlap laterally those of the lower jaw, whilst in most crocodiles the overlapping is less marked and the teeth mostly interlock, a feature which increases with the slenderness of the snout.
The above list shows that the usual statement that crocodiles inhabit the Old World and alligators the New World is not strictly true.
In the Tertiary epoch alligators, crocodiles and long-snouted gavials existed in Europe.
The Reptilia include countless numbers of alligators in the Guayas and its tributaries and in the tide-water channels of many of the smaller rivers; many species of lizards, of which Mr Whymper found three in the Quito basin; snakes of every description from the huge anaconda of the Amazon region down to the beautifully marked coral snake; and a great variety of frogs and toads.
Alligators are found in most of the rivers, and the gavial is less frequently met with.
Crocodiles (commonly called alligators) swarm in all parts of the Brahmaputra, and are very destructive to the fish, of which hundreds of varieties are found, and which supply a valuable article of food.
Alligators proper occur in the fluviatile deposits of the age of the Upper Chalk in Europe, where they did not die out until the Pliocene age; they are now restricted to two species, A.
There are no alligators in the streams, and the tropical north has very few lizards.
Alligators inhabit the southern river-bottoms, and there are some rattlesnakes on the uplands.