A moth or frog that looks like the vegetation or terrain it's resting on is
less likely to be picked off by a hungry bird. But birds generally find
their food visually and don't rely on smell as do snakes and mammals, for
instance. Here's the question: Are there any animals that use "olfactory
camouflage" as a defense mechanism? This might be considered an off-topic
request so feel free to contact me directly. Thanks.

Janet Millenson
Potomac, MD (Montgomery County)

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"Look at the birds!" -- Pascal the parrot