The Unadulterated Cat is becoming an endangered species as more and more of us settle for those boring mass-produced cats the ad-men sell us - the pussies that purr into their gold-plated food bowls on the telly. But the Campaign for Real Cats sets out to change all that by helping us to recognise a true, unadulterated cat when we see one. For example: real cats have ears that look like they've been trimmed with…