I have made and bought dog beds for my two dogs, which they didn't use; I have three cats who use them. My dogs are both over 80 pounds, a 12 year old who is having trouble getting up and down from the floor, and a teenager who thinks he's a greyhound.  Both of these dogs love their new orthopedic beds and sleep on them every night and even part of the day. They are about 31/2-4 inches thick and have held up much better than the pet store cushion type beds.  This was a great purchase!!