ADV began in minks some time ago (50's I think). Back then many, many mink ranches also raised ferrets. The ADV mutated a bit and was then able to infect ferrets... that is how it all began as far as we know. It is thought that virus has mutated futher since then. Wolfy Please visit: http://www.geocities.com/wolfysluv/ For information on deafness in ferrets: http://www.geocities.com/wolfysluv/deaf.html [Posted in FML issue 3193]