hi, i have two dexter cattle at work, just over a year old. they have recently developed small scabby sores on their noses. i initially thought ticks, but they have no obvious signs of life, looking a bit like warts!!! i have had to de louse them recently and they are now clear so dont think its anything related to this, they are on short pasture being supplemented with stock pellets and hay...any ideas? im fairly new to cattle so please excuse if im being totally dumb!!!! :?