"Molly is going to be eight years old in Dec-09 so I worry about her hips especially when she sleeps for long periods of time. She seems to really love her bed and I'm not seeing any problems. She's been used to "ruffeling" her bed and that seems to be a bit disconcerning to her but she's getting used to it. Plus since it's so deep, she's not getting the cold coming up from the floor."