There is a saying that goes around the Daintree
Rainforest: never smile at a crocodile. Why is this
saying famous and what makes these crocs notorious? Find out in this article as
we get to know the famous crocodiles of the Daintree.
Tale
of two crocs
Australia is considered croc country for being home to two major
crocodile species: the freshwater crocodile (Crocodylus johnstoni) and
saltwater crocodile (Crocodylus porosus). Despite their names, both crocodiles
can live in either freshwater or saltwater. In the Daintree however, only
saltwater crocodiles can be seen roaming the area. Saltwater crocs are
distinctly larger and more muscular than their freshwater counterparts. They also have a preference to larger preys
as they have bigger jaws to crush their food.
Eat
like a croc
Crocodiles are carnivores. Their diets include any species that
live within their territory from fishes, crabs, birds, to larger preys like
cattle or horses. Humans however are not naturally part of the crocodile’s
diet. Most human attacks recorded are purely due to territorial instincts.
Crocodiles are very protective of their homes and will show aggression to any
intruder that comes within their domain. This behaviour increases especially
during their breeding season that occurs mostly during summer.
Crocs can convert 50-70 percent of their food into growth and
energy which is very different to humans who can only use 3-4 percent. This
ability allows crocodiles to survive for months without eating.
The
crocodile smile
Crocs have a constant supply of teeth. These usually protrude
out of their jaws giving the impression that they are always grinning. If these
teeth fall off, a new set will regrow to replace them.
Roll
of Death
Being ambush predators, crocodiles can hunt without making any
noises. Once the opportunity to attack presents itself, they will leap out of
the water and swallow the prey whole. If the victim is larger and can’t be
taken in one bite, it will lock its jaws around the prey and roll over swinging
from side to side to tear the meat apart. This special manoeuvre is powerful
enough to rip livestock into bite sized pieces.
Can’t
take the heat
Crocodiles can’t sweat so they have to stay still and open their
mouths to regulate their body heat. This is the reason why we seldom see
crocodiles moving when visiting zoos. They are also prone to exhaustion because
of their inability to take in oxygen while doing strenuous activity such as
attacking a prey or fighting other crocodiles. A series of large movements will
leave them stunned for a couple of minutes to recover.
These creatures are frightening and fascinating – making them
part of the attractions offered by various Daintree
Rainforest Tours. Just remember to be cautious when
visiting croc territory to avoid any accidents that may occur as they are
considered wild and highly dangerous animals. Also remember that they are part
of the protected species of animals under the care the Department of
Environment and Heritage Protection so harming one of them might get you into
trouble.
photo credit: Crocodiles via photopin (license) photo credit: North Queensland 2009 166 via photopin (license) photo credit: Croc Feeding_21 via photopin (license) photo credit: La ferme aux crocodiles (PIERRELATTE,FR26) via photopin (license)
