Love, love, love this bed! I work in veterinary medicine & have seen all sorts of dog beds over the years. This one is by far my favorite. Although expensive, they are beautiful & completely machine washable. I purchased 2 mediums for my 2 mixed breeds weighing 30-45# & my friend purchased 2 mediums for her dachshunds. My 45#'r could've gone up to a large but is still really comfortable. The beds don't look quite as big as you would think from the dimensions because of the curved bolster construction. My dogs loved them right away & lie on them all the time. Very good for dogs who like to "snuggle in" to their bed. Thanks West Paw!