What physical trait is the non-negotiable defining feature separating a Birman from other pointed breeds?
Answer
Four pristine white paws
The defining feature that sets Birmans apart from other pointed cats, such as the Siamese, is their requirement of having four pristine white 'gloves' or 'socks,' which is a mandatory part of their breed standard.

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Birman Cat 101 - Everything You Need to Know - YouTube
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