The Boxer and the Dalmation are by far the two breeds most prone (or least resistant) to valley fever. Any illness in a member of one of these breeds makes an Arizona veterinarian suspicious. These breeds also respond to treatment more slowly and some are chronically ill with the disease, and need chronic life long teatment. Since the illness is acquired by breathing the organism in Arizona dust, preventing digging, a grass or gravel over plastic back yard, keeping dogs indoors during work hours for dirt work construction in your neighborhood is a good idea.