❖ Know, that the quality of the bed may vary. Ensure that you buy memory foam beds that rank higher on density. The density ranges from 3 lb, (lowest) and 5 lb (highest). The 3-lb-density memory foam does not have a high-density foam, thus hampering its longevity, with the purpose not being served. Generally, the 4-lb memory foam is used as a topper, whereas, the 5-lb memory foam ranks highest on density, being the firmest, and providing great comfort for your large and hefty dog.