Smell and Taste
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Everyone has seen a lizard
flick their tongue
out. It is also common in snakes. The lizard is using
their tongue to assist the nose with identifying smells.
The Jacobson's Organ works with the tongue to
process chemicals in the air, and does the majority
of the work for the brain in this regard. It has also
been seen as an important factor in mating.
Lizards tongues come in all shapes and sizes,
but they all effectively do the same thing when they
flick out, except for chameleons. The tongue picks up
pieces of a scent, and brings it back into the mouth
to the Jacobson's Organ, located at the top of their
mouth. Cells on the tongue and in their mouth also collect
Terrestrial lizards seem to have higher developed
sensory organs, as it is easier to discern smells at
ground level where they are stronger. Hunting and foraging
for food is only one use of the Jacobson's Organ.
It has been seen that recognizing reproduction partners
and courtship during the mating process are both secondary