Measure your dog lying down
A good starting point is measuring your dog while they are lying in their natural sleeping position. Add extra room so they can stretch and turn comfortably.
Consider sleeping style
Dogs that curl up may fit a smaller size than dogs that stretch out. If unsure between two sizes, many owners prefer the larger option for flexibility.
Add blankets for comfort
A fleece blanket can make the bed cosier and is useful for travel, crates or protecting furniture.