Multiple Sizes Available: The dog sofa bed features 3 sizes for you to choose from, and we recommend measuring the body size of your pet before purchase, and the larger size would be more comfortable for pets to lie on. The lying area measures 28"" x 26"" (L x W)(small size), 32"" x 32"" (L x W)(medium size), 38"" x 33"" (L x W)(large size).