Scurs
Small, loose horn-like growths on the heads of some polled cattle, not fixed to the skull.
Also: scur, loose horns
Scurs are horny growths that appear where horns would be, but are attached only to the skin rather than fused to the skull, so they can move when pushed. They range from small scabs to growths several centimetres long. Scurs turn up in polled cattle and in the offspring of polled and horned parents. Their inheritance is separate from the polled gene and is influenced by sex, so they are more common in bulls than in cows. A scurred animal is still genetically polled. Some breed societies note scurs in pedigree records, since buyers of polled bulls want to know how they will breed.