Best Friends by Sheri is the American brand behind the Original Calming Donut — the round, deep-walled shag cuddler that turned "donut bed" into a category. The idea is simple: a raised rim to rest a head and neck against, a dished middle to burrow into, and a deep faux-fur pile that holds body heat. For a dog or cat that struggles to settle, that combination does more than a flat mattress.
Sizing is where most people go wrong. The advertised diameter is measured across the outside of the rim, so the actual sleeping area is a fair bit smaller. If your pet curls up nose-to-tail, the recommended size will fit; if they sprawl flat on their side, buy one size up. The pile is also warm by design — a heavy-coated dog in a hot room may prefer something flatter and more breathable.
All beds are machine washable on a gentle cycle and tumble dry on low, which is worth checking before you buy any bed a pet sleeps in every night.
