hey all . i have 2, 3 year old female spayed ferrets. they have both started doing something odd this last week they are digging at the bottom of their cage, on the plastic tray. its driving me up the WALL! last nite Ziva the white one did it all nite non stop does anyone have any experiance with this? im to the point now that i cant sleep at all and now its waking up my daughters at night. they get good quality ferret food and have plenty of fresh water, and have a ton of toys to play with thanks for any help!