i have had my darling cat "chunk" for about seven years now, after finding him as a kitten on the street. he has had a clean bill of health other than ear mites here and again. however awhile ago i moved into an apartment where my roomate had two other cats. after moving out i noticed my cat had a darkish dirt looking substance under his chin which he used to itch. also he has developed a pimple looking thing on the outside of his ear which is sometimes pussy and seems to be itching him as well. does anyone know what these things are? and if so are there any over the counter medications? id love to take him to the vet but it will take me awhile considering im a poor college student. thanks so much for any help given in the future.