Australian Snakes
Snakes are another Australian specialty.  Many
are poisonous, such as this Black Tiger Snake.
This is the Copperhead, encountered on a
national park trail.  Poisonous, o
f course.
A Python, non-poisonous, a constrictor that crushes its
prey to death.

The snakes never bothered me, but discovering leeches
on my legs was horrible.  I managed to remove each
one before it latched on.  Tossing the leeches away in
panic, there was no time for leech photography.   
If you have a high speed internet
connection,  watch the Intrepid Berkeley
Explorer's free video of this trip by clicking
Kangaroo From Kakadu