My three very large BT boys came to me already dehorned. Not a very good job had been done, they all have scurs, and two of them knock them, and they come all wobbly, and then bleed. The third boy, his has grown back as a horn, and curled round, and is now very close to his eye.
I have spoken with the vet,and said she would cheese wire the horn off, or I could do it myself. Not sure I could do it, the way its close to his eye.