Active
and passive defence strategy:
Active variant includes: loud hissing, non-biting strikes
(rarely with opened mouth), head enlargement & stinky secretion.
In passive
strategy Grass snake covers the head or "acts as dead" by
reverting the head or body, mouth opening with tounge out &
becomes still.
When
Grass Snake does not feel threatend any more it relaxes and
can be a very patient "photo-model".
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