I have an 11 lb. ten year old Havanese and this fits her perfectly.  What I love about this Gilbertson dog sofa is that it is lower to the ground than most, very soft, and my dog loves being able to stretch out and have her head resting comfortably on the arms.  We tried another sofa that the bottom cushion tapered in so we didn't have the full rectangle shape which made it harder for her to get into as well as the pressure on her legs for only being able to fit in it by having to be curled up all the time.  I do feel that is something very important to consider if you have a dog that likes to stretch out as well as curling up.  I would highly recommend this adorable dog bed!!!