To Todd Cromwell: This is a normal "ferret thing" to build a nest. Ferrets like cosy, close quarters - they like to feel things touching them, which is why they tend to build little nests or cuddle under blankets/towels and sleep in hats and pants and sweaters. This behavior is not limited to females; males, too, will build nests. When I change my crew's cages, I always put plenty of soft towels in them and I make them nice and neat. Within 5 minutes, they have totally rearranged the towels into 1 big mess and found somewhere inside/underneath the bundle of towels to sleep. Probably an instinctive thing: European polecats (a relative) still live in underground dens and the BFF burrows underground as well. I throw a large towel or blanket over the tops of my cages to give it a more den-like atmosphere. The hanging combination tent/hammie is quite popular in my house. It is amazing what powerful little creatures they are. I never tire of watching them - I am amazed at how much they "think". They calculate, analysizeuh....analyze, and then put into action. They don't understand the term "can't" - it's just not part of their vocabulary. Kind of like the "little engine that could" ........I'm starting to sound like Rudy! Debbie Riccio WNYFLFA [Posted in FML issue 1174]