My 1 1/2 year old sow has a strange growth on her nose. Its still quite small, maybe 3mm long, but seems to be getting bigger over time. It started out looking like a pimple (about 6 months ago) and now it is a bit longer and slightly bumpy. It almost looks like a human wart...could it be? My son had a wart for a while. Could he have infected her with it? I tried to take a picture, but its so small so difficult to zoom in.