The
Crocodile
By:
Jordan R.
Click on the picture above
to hear the crocodile sound
Click on the picture above to
hear the song "Crocodile Rock"
The American crocodile is one of 13 different species of crocodiles in
the
world. Crocodiles are brownish green, have a long, narrow skull, and
pointed snout, and a streamlined body. The tail is used like a paddle and
is
super powerful. A crocodile can swim 20 miles an hour. Even when
its mouth
is closed, all its teeth are able to see sticking out of their mouth all
crooked from eating all kinds of things. Their teeth last two years
and are all replaceable. Crocodiles can grow to be 30 feet long and can
weigh up to 2,000 pounds. Crocodiles eat mostly eat meat, but have been
known to
catch and eat anything that wanders near enough. They swallow their prey
whole,
usually after drowning it, and they never chew, they gulp it down. They
have a
tongue, but it doesn't help in their digestion crocodiles cant bite their
tongues
because it is attached to the bottom of their mouth. Crocodiles eat rocks
which stay
inside the stomach and help to grind up their food. Some scientists say
that this
helps keep the crocodiles from feeling hungry, or serves as extra weight
while
swimming or diving, to stay stable in the water. The American crocodile
has an
which attracts fish making them much easier to catch.
Crocodiles are cold-blooded and live in warm climates. They excavate
burrows along the water's edge. They live in salt water or in brackish
water
along the coastline or coastal river mouth. They emerge from the water,
or
their burrows, to raise their body temperature by lying in the sun.
During the dry season, they may become sluggish, refuse to eat, and bury
themselves in the mud. Crocodiles can live a very long time, as long as
100
years, as long as their environment stays stable.
Crocodiles build nests in the winter months by digging a hole using their
back legs and lay between 30 and 50 eggs. The eggs take nine or ten weeks
to hatch and the mother stays near by to the nest. She will rest her head
on
the nest, listening for the calls of the hatchlings. She will then dig
them out
using her front feet. Sometimes she has to crack the eggshell. The babies
will feed on the yolk sac from their eggs for the first 2-14 days since
they were born.
The babies make sounds like a barking dog and their teeth are like tiny
needles. Higher temperature (89-91) in the nest will produce more males,
while lower temperature (below 88) produces females. Any temperature
below 82 will kill the babies. They can't survive in very salty water either.
After they come out of their nest if a baby crocodile is dead the mom will
eat it
cause she would not even hunt for food, she would not take any chances
of any other
animal wondering around in her nest for the baby crocodile's. If their
not dead the
mom will carry the baby's in her mouth to the water and they can swim right
away.
The young feed on fish and small land animals like lizards, crickets and
grasshoppers.
Crocodile manure provides important nutrients for the smaller animals in
the
food chain, but the crocodile is at the top of the food chain itself. There
is a
colony of crocodiles living in by the Turkey Point power plant, and there
is a
wildlife refuge in Key Largo. At the edge of the Everglades, crocodiles
live
in the brackish waters of the Florida Bay. As theses areas become polluted,
or drained by man, the crocodiles became endangered.
Fun Crocodile
Facts:
Your closing jaws exert anywhere
from forty to eighty pounds of pressure. The closing jaws of a 120-pound
crocodile exert about 1,540 pounds of pressure!.
Sea crocodiles really do cry.
It's one of the ways they eliminate salt from the system.
Oddly enough, a newly hatched
crocodile is three times the size of the egg from which it just emerged.
Crocodiles can't chew. Be forewarned,
though, they CAN (and do) bite!
Look at your thumb. That's
about the size of a crocodile's brain.
Ancient Egyptians embalmed
crocodiles and buried them in family plots. Archeologists near Egypt's
Tebtynis have found thousands of such graves.
The only natural enemy of a
young crocodile (not counting man) is an old crocodile.
To find out
more about the gator check out these websites:
http://www.flmnh.ufl.edu/natsci/herpetology/brittoncrocs/csl.html
http://www.pbs.org/wgbh/nova/crocs/
http://win.tiho-hannover.de/croc/
http://www.envirolink.org/oneworld/tales/crocs/cinder.html
|
Click on the crocodile
to see picture gallery
|