I think that they had a white Fallow Buck at Bradgate Park in Leicestershire that had a single spike in the centre of its head. The Rangers wanted it culled out but the local press got the story and had the cull stopped. As I understand it, in the end the rangers had to dart the beast and cut the spike off and debud it like a cow to stop in growing next year. Once the 'hoo har' had died down the little unicorn just disappeared!
Imagine the damage it would have done in the rut! :???: