Copy Cat or Carbon Copy as she's also known, was born just over a year ago.
Her genetic mum is Rainbow and their DNA is exactly the same.
This means they should be exactly the same as each other.
But while Rainbow is a tortoiseshell with brown, white and gold fur, Cc has a striped grey coat.
Act differently
Scientists say it proves clones don't necessarily turn out to be exact copies.
That might upset people who'd hoped to clone their much-loved pets.
Scientists recently claimed to have cloned the first human baby but there's no proof yet.
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