Joanne- Guinea pigs can get ringworm. Molly had it when we got her, but I had no idea & was always holding & cuddling her & did not get it. The vets gave us something to put on it but I forget what (sorry). It cleared it right up. ~Jaime, Molly,& Grumpy Carl~ ~Radar & Albert always in our hearts~ http://www.piggiepages1.blinkz.com/