An Education Kit
for Grades 5 - 7
Information Sheet D
Crocs have excellent
hearing. Ear flaps close when the croc dives underwater.
hold the prey. To feed, the croc must tear off bite-sized chunks or
swallow the prey whole.
When the croc
loses a tooth, another one grows in its place.
Crocs can see underwater
almost as well as on land. 'See-through' eyelids protect their eyes
Crocs can also
see very well at night.
A 3.5m crocodile
has brain the same size as a walnut! However crocs have very good senses
for finding prey and they learn quickly.
The long crocodile
jaw is designed for grabbing prey. The jaw can open and shut but not
move from side to side.
Very powerful muscles
snap the jaw closed when it grabs prey. The muscles that open the jaw
are not as strong. Croc teeth are special too..
The croc's scaly
skin is waterproof. For extra protection, the croc has bony scales and
ridges along its back.
The bumps along
the tail are not bony. Instead they have lots of blood vessels which
collect warmth from the sun.
Both feet have
claws but the back feet are webbed.
To swim, the croc
swings its powerful tail from side to side. Its legs are held against