Purring
Purring is an extraordinary sound and it isn't
exactly clear how cats do it.
Not only domestic cats purr-many of the
larger members of the cat family can also
generate this vibration.
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The behaviour stems from kitten hood, as the mother
return to the den & quietly signals
(to avoid attracting attention from predators)
that all is ok by purring to her kittens.
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Cats will also purr when they are
sick or injured; there are various theories
for this - the frequency of the purr in sick
animals differs from the healthy purr & it may
have healing properties or it may be self-soothing
when the cat feels at its most vulnerable.
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