The Crocodilia order incorporates the biggest reptiles among different reptiles. Tough skin, and clay since it contains bits of bone arranged in rows and sprouts to frame a dermal shield containing scales produced using horn.

They Pyramid-formed head, hard and solid, outfitted with pointed teeth type polyodont teeth. Little eyes situated on the head that distends in the dorsal-lateral. Vertical pupilss are equipped with eye membranes, secured by folds of skin that fold over the bone so the gap just resembles a hole. The nostrils are located on the dorsal side of the tip of the nose and are equipped with a covering of muscles that can naturally contract when the crocodile dives. The ear hole is close to the caudal eye, covered by folds of skin. Long and strong tail. The limbs are generally short but strong enough. The rear limbs are longer, four-fingered and webbed. Fingers with 5 fingers without membranes. The heart of the crocodile has 4 chambers but the right and left ventricular bulkhead is flawed which causes blood blending. The heart has a panizza foramen. Crocodilia is a poikilothermic creature, so most will sunbathe during the day to keep up their body temperature. They chase around evening time. Oviparous, females make nests by digging in the ground to store eggs.



Aligatoridae family has trademark blunt nose shape with rows of teeth in the lower jaw definitely adhered to the teeth contained in the hole in the upper jaw so when the nose closes just the lines of teeth on the upper jaw are noticeable, can reach at a greatest age of 75 years.

Impervious to low temperatures. It has bone plates on the hips and the lower belly has sizes of horn material that are more than 6 scales wide.


The qualities of this family is the nose is decreased with a practically triangular shape, and when closed, the two lines of teeth are plainly noticeable. The two ribs in the primary vertebrae of the neck are fully open. There is likewise a single row of transverse scales on the back of the head. which is close to 6 in the neck. The Crocodilidae family is separated into sub-families:

  • Subfamily Crocodylinae Crocodylus genus: Crocodylus acutus, Crocodylus cathaphractus, moderate Crocodylus, Crocodylus mindorensis, Crocodylus porosus.


Gavialidae is a group of reptiles inside the order Crocodilia. Gavialidae have routinely consisted of just one enduring animal types, the gharial (Gavialis gangeticus), which is local to India and Nepal. Numerous extinct species are likewise known.

The false gharial (Tomistoma schlegelii) has usually been thought to be a member of the family Crocodylidae dependent on a few characters including skull morphology, however has once in a while been seen as a member of this family because of general similarities in morphology and habit. Various molecular studies have consistently shown the two species to be each other’s nearest living relative, supporting the view that they are in the same family.

Gavialids are enormous semiaquatic reptiles, resembling crocodiles, but with a lot more thinner snouts. The thin snout is used to catch fish.


CROCODYLUS POROSUS (Saltwater crocodile)

Salwater crocodiles are known as the biggest crocodiles in the world and can reach at lengths of 7 meters. The body is gray or dark green, particularly in the adult, while the young is increasingly greenish in color with black patches, and on the tail there are black patches of black patches. This type of crocodile occupies a river mouth environment. Sometimes found in the high oceans. The spre ad of this crocodile is almost in several settings in Indonesia.


This crocodile can be recognized from other crocodiles dependent on a restricted nose with a body size that reaches 5.6 m. Living space that is a most loved of crocodiles is the swamps, up to the river in the interior. The main food is fish, shrimp and furthermore monkey. The distribution of crocodiles includes Sumatra, Kalimantan and Java.

OSTEALEMUS TETRASPIS ( Dwarf crocodile )

The dwarf crocodile (Osteolaemus tetraspis), also known as the African dwarf crocodile, broad-snouted crocodile (a name more often used for the Asian mugger crocodile) or bony crocodile, is an African crocodile that is also the smallest extant (living) species of crocodile. Sampling has identified three genetically distinct populations.

MECISTOPS CATAPHRACTUS (Slender snouted crocodile)

Slender snouted crocodiles are local to freshwater natural surroundings in central and western Africa. They prefer profoundly vegetated bodies of water to avoid prey and potential predators. They are medium-sized crocodiles, normally somewhat smaller than the Nile crocodile, yet are bigger than a few different types of crocodilians. Adults are ordinarily about 2.5 m (8.2 ft) long, yet have been known to reach at 4.2 m (14 ft).