I brought home a pregnant stray who now has 6 kittens, they are 8 days old today. Her nest was originally in a laundry basket lined with towels on the floor of our spare room. This morning I discovered she moved her babies to the bed. The mattress sits on the floor, but it is 16 inches high. The kittens are barely crawling and eyes just beginning to open. I'm worried about one falling off. The only thing I can think to do is remove the bed from the room. I thought of leaning it against the wall, but if she still wanted her kitties on it, that would be an even further fall. Can a 16 inch fall cause damage to a kitten?