This document summarizes different alligator and crocodile species, including their key distinguishing features and conservation status. It discusses the American alligator and Chinese alligator, as well as the black caiman, Orinoco crocodile, African slender-snouted crocodile, and Philippine crocodile. The Philippine crocodile is critically endangered with only around 250 remaining in the wild, while the African slender-snouted crocodile is of least concern. American alligators can remain underwater for hours by reducing blood circulation to their lungs.

1. Alligators and Crocodiles
By Joshua .W. and Nicholas .W.

2. Alligator and
Crocodile Types
Alligators
• Alligator mississippiensis or
American alligator
• Chinese alligator
Scientific classification
Crocodiles
Kingdom: Animalia
• Black Caiman Phylum: Chordata
• Orinoco Crocodile or Class: Reptilia
crocodylus intermedius Superorder: Crocodylomorpha
• African Slender-snouted Order: Crocodylia
Crocodile Family: Alligatoridae
• Philippine Crocodile Subfamily: Alligatorinae

3. Alligators

4. Chinese Alligator American Alligator
 The American alligator
 The Chinese alligator or (Alligator mississippiensis),
Alligator (simplified sometimes referred to
Chinese: 扬子鳄; colloquially as a gator, is a
traditional Chinese: 揚子鱷, reptile endemic only to the
(yáng zǐ è) Alligator Southeastern United States. It
sinensis) is one of two is one of the two living species
of alligator, in the genus
known living species of Alligator, within the family
Alligator, a genus in the Alligatoridae. It is larger than
family Alligatoridae. The the other extant alligator
Chinese alligator is native species, the Chinese alligator.
only to China. It is smaller  The American alligator
than the other alligator inhabits wetlands that
species, the American frequently overlap with
alligator, growing to an human-populated areas.
average of 1.5 m (5 ft).

5. Chinese Alligator
There are a few differences.
One obvious difference is that
the Chinese alligator is quite
small. Usually only attaining a
length of 5 feet (1.5 m),
these alligators are known to
grow to 7 feet (2.1 m). Unlike
the American alligator, the
Chinese alligator is fully
armored; even the belly is
armored, which is a feature of
only a few crocodilians. They
weigh up to 100 pounds
(45 kg). Chinese alligators
grow slowly, being only 2 ft
(60 cm) long after 2 years of
age.

6. American Alligator
They could survive only in
captivity. Like all albino
animals, they are very
vulnerable to the sun and
predators.American Alligators
can remain underwater for
several hours if not actively
swimming or hunting (then it
is only about 20 minutes);
they do this by rerouting
blood to reduce circulation to
the lungs, and thus the need
for oxygen.

8. Predators
 babies: raccoons, otters,
herons, snakes, snapping
turtles, other alligators,
Humans

9. Crocodiles

10. Black Caiman
It is the largest predator in
the Amazon basin and
possibly the largest member
of the family Alligatoridae.
Most adult black caimans are
3 to 4.26 metres (9.8–14 ft)
in lengths, with old males
rarely growing larger than 5
metres (16 ft). In some areas
(such as the Araguaia River)
this species is consistently
reported at 4 to 5 metres
(13–16 ft) in length, much
larger than the alligator
(which rarely even reaches 4
meters). Several unconfirmed
sources report that the black
caiman can grow to 6 metres
(20 ft) or more.

11. Orinoco Crocodile
Typical measurements for adults
range from 3 to 4.8 m (9.9-16
ft). Typical weight for mature
females is 200 kg (440 lbs) and
380 kg (837 lbs) for males. The
largest specimen reported was
shot in 1800 and allegedly
measured 6.6 m (22 ft). Even at
its, although It is restricted to the
Orinoco River drainage basin and
the Meta River drainage basin in
Colombia and Venezuela. Young
Orinoco crocodiles are at risk
from American Black Vultures,
tegu lizards, anacondas, caimans.

12. African Slender-
snouted Crocodile
These crocodiles are not
endangered.
African Slender-snouted
Crocodile begin to breed in
the rainy season. The female
constructs a mound nest
consisting mainly of plant
matter, which is sited usually
on river banks. The eggs have
a long incubation period,
sometimes up to 110 days.

13. Philippine crocodile
The Philippine crocodile is
only found on the islands of
the Philippines. This species
of crocodile is one of the most
severely threatened species
around. There are roughly
250 left in the wild as of
September 2011 according to
an article with National
Geographic.
The Philippine crocodile has
been extirpated in Samar,
Jolo, Negros Island, Masbate,
and Busuanga. There are still
surviving population in the
Northern Sierra Madre
National Park, San Mariano,
Isabela, Dalupiri island in the
Babuyan Islands, and Abra
(province) in Luzon and
Ligawasan Marsh in
Mindanao.]

14. Endangered
Scale
EX: Extinct
EW: Extinct in the wild
CR: Critically
Endangered
EN: Endangered
VU: Vulnerable
Cd: Conservation
Dependent
Nt: Near Threatened
Lc: Least Concern

15. And that is all we have for now!
Any questions?