It has been reported that a cow in China has grown a horn in the center of its forehead:

Farmer Jia Kebing noticed a small bump on this cow's forehead when it was born two years ago but didn't expect it to grow into a 20cm (8in) horn.

'My farm is famous in this region for this cow and people come in here just to see it,' said Mr Jia from Baoding in nothern China's Hebei province.

In the comments, describe the magical properties of the unicow.

Link via Geekologie | Photo: Metro.co.uk