Black cats with green eyes have long been shrouded in mysticism and superstition. Their inky midnight fur and enchanting ...

Twin cats Iriss and Abyss were born with blue and hazel eyes Heterochromia is a genetic mutation that results in different coloured eyes The photogenic cats have over 47,000 fans on Instagram ...

We’ve fallen in love with a black cat who has one blue eye, and one yellow. Niu Nai, whose name means ‘milk’ in Mandarin, lives with his owner Clare Zheng, in China.