This is Jessie!(In scarf) Jessie has an inherited condition called demodex mange. There is a mange mite involved, but most dogs have enough immunity to ward it off. Because most of the immune system is in the digestive tract (70%), a healthy digestive tract will have a stronger immune system. Fido-Vite supplements contain probiotics, immunoglobulin and nucleotides. The bottom picture is Jessie after 5 months on Fido-Vite.