Why do cats purr?

It’s a mistake to think that cats purr only because they are content. They actually purr when communicating a thank you for friendship received and when requesting friendship. That’s the interpretation of Dr Desmond Morris and I endorse it. This is because cats purr not only when content but when, for example, they are at a veterinarian’s and about to be euthanized. There is an underlying process behind the cat purr and it is not just about contentment.

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