Deinosuchus hatcheri

Length: 30 feet (female), 35 feet (male)
Height: 4 feet
Weight: 7 tonnes (female), 8 tonnes (male)

**Coloration:**

*Adult (both sexes) -* Dark colorations ranging from dark greens to jet black; to black with a blueish tinge, all with a pale underbelly.

*Juvenile (both sexes) -* Black with yellow or green speckles and stripes which help serve as camouflage.

**Diet:**

 Deinosuchus eats mainly fish, but it will attack almost anything unfortunate enough to cross its path including large and small ornithopods and theropods, smaller-sized sauropods, native Costa Rican bird and mammal species, smaller-sized Mosasaurus and other Deinosuchus. It will also scavenge carrion, sometimes stealing food from other predators such as Tyrannosaurus. Deinosuchus can eat up to half its body weight at a single feeding. Small animals are swallowed whole, while bigger prey is torn into bite-sized chunks.

**Preferred Habitat:**

 Deep water with animal drinking beaches nearby, such as the River and Deep Channel. Deinosuchus may also be found on the Beach and can swim out to sea.

**Social Structure:**

The largest adults of either sex tend to be solitary and territorial, reacting aggressively towards others of a similar size. Sub-adult and smaller individuals have a higher tolerance of each other and even have a hierarchy of sorts, with the most dominant individuals eating first from a kill and having access to the most desirable basking areas. Groups of sub-adults will also co-operate together in order to capture prey. It is not uncommon for large groups of Deinosuchus to participate in a feeding frenzy, tolerating one another only when food is readily available. Several individuals may also bask along the same stretch of shoreline, being respectful of space.

**Description:**

Gigantic alligator. Broad snout with a slightly
bulbous tip, more pronounced in males. Teeth are thick and robust; those
 close to the rear of the jaws are short, rounded, and blunt; adapted
for grabbing and crushing rather than piercing. When the jaws are
closed, only the fourth tooth of the lower jaw is visible. The
nictitating membranes cover its eyes when its head is underwater. In
addition, glands on the nictitating membrane secrete a salty lubricant
that keeps the eye clean. The tongue cannot move freely but is held in
place by a folded membrane. Males tend to be larger than females.

**Behaviors:** The master of Isla Sorna's waterways is a gigantic
species of prehistoric alligator; one of the largest crocodilians the
world has ever seen. A force to be reckoned with by all of Sorna's
inhabitants, Deinosuchus boasts armor plating surpassed only by
Ankylosaurus; and a bite force equal to or even surpassing that of
Tyrannosaurus. Deinosuchus has a secondary bony palate, which permits it
 to breathe through its nostrils while the rest of the head is submerged
 underwater. A stalk and ambush predator, Deinosuchus is a practitioner
of patience and can wait for hours on end while submerged, waiting to
sense the vibrations of an unsuspecting victim approaching the bank to
drink. Deinosuchus most often hunts at night, using its acute hearing
and sight.
Once the target is in range, Deinosuchus will lunge and grab the
unfortunate victim before it can escape, dragging it into the water. The
 massive alligator will then proceed to either hold its victim
underwater until it eventually drowns, or thrash and roll about in order
 to shred and tear chunks of flesh from the bitten area and cause the
victim to bleed profusely. A special valve at the back of the throat
allows the mouth to be opened to catch and hold prey underwater without
water entering the throat. Sometimes, when food is plentiful,
Deinosuchus will make a kill and then store it underwater. This causes a
 controlled rot that softens up the food, so it is easier to tear off
chunks of flesh to swallow whole.
Sub-adult and smaller adults use their bodies and tails to herd groups
of fish toward a bank, and eat them with quick sideways jerks of their
heads. They also co-operate, blocking migrating fish by forming a
semicircle across the river. Groups of Deinosuchus may travel several
miles inland in order to feast on a carcass. When groups are sharing a
kill, they use each other for leverage, biting down hard and then
twisting their bodies to tear off large pieces of meat in a "death
roll". They may also get the necessary leverage by lodging their prey
under branches or stones, before rolling and ripping. When not hungry,
Deinosuchus will often haul its massive body onto the shore to bask in
good weather, opening its jaws to allow egrets and Compsognathus to pick
 out pieces of rancid meat, leeches and other parasites from between its
 teeth.
During the mating season males will bellow to declare territory; and
attract females by slapping their snouts in the water, blowing water out
 of their nostrils, and making a variety of other noises including
infrasounds, causing the water above their backs to vibrate. The larger
males of a population tend to be more successful. Once a female has been
 attracted, the pair warble and rub the undersides of their jaws
together. After mating, the female will crawl up on the bank and builds a
 compost mound nest of rotting leaves, twigs and branches encased in
mud, in a sheltered spot in or near the water. Both parents will guard
the nest until the eggs hatch, aggressively charging at any creature
that comes too close. The hatching young produce a distinctive squeak.
Once the female hears the hatchlings calling for her, she will dig them
out to free them before carrying them in her jaws to a small nursery
pond. The parents will then remain for a short while, before abandoning
their offspring and resuming their solitary lives. The young are capable
 of fending for themselves, feeding on mostly fish, frogs and
invertebrates, gradually moving onto larger prey. Being so small, they
are often considered prey themselves, to not only theropod dinosaurs
such as Baryonyx and Spinosaurus but also bigger Deinosuchus. Therefore
the juveniles are very elusive, keeping away from deeper water which may
 harbor the bigger carnivores and being capable of very rapid movement
in order to escape their enemies. Often, the juveniles of multiple
females gather together to form moderate-sized crèches, increasing their
 chances of survival.
During aquatic locomotion, Deinosuchus' muscular tail undulates from
side to side to drive the animal through the water while the limbs are
held close to the body to reduce drag. When the animal needs to stop,
steer, or manoeuvre in a different direction, the limbs are splayed out.
 Deinosuchus generally cruises slowly on the surface or underwater with
gentle sinuous movements of the tail, but when pursued or when chasing
prey it can move rapidly. Despite its bulk, Deinosuchus is surprisingly
agile on land, capable of short bursts of speed. This often takes many
animals by surprise when a seemingly lethargic Deinosuchus charges them
suddenly and unexpectedly.