I sing to my ferrets a lot--actually, I tend to sing a lot and they're alwasys around, so they get sung to sort of out of a process of elimination. I've found that there are very different reactions to music. Chloe is pretty indifferent while Buddy seems to enjoy it. We were playing last night and I was warbling away and he was dooking and dancing around me. There are also times (in the vets office) when humming seems to keep him calm. I had two pet rats a few years pack who would start wrestling just as I was going to sleep at night. Whenever I popped Loreena McKennit's Parallel Dreams in the player, they would settle down and go right to sleep. Judith [Posted in FML issue 2006]