one of my cats developed a cauliflower ear years ago, and today he has come home with it all swollen again and crusty. i have just cleaned it for the second time and each time smelly pus and watery blood has come out. he has been really brave to put up with it and now has good old sudocreme on it as a short term measure till he can get to the vets on monday, it looks like he has been bit by something. good job im not squeamish about pus ,lol