Sizing a donut bed: measure the sleeper, not the bed

Last updated: July 10, 2026

Pet beds are often bought by weight ratings or general animal size, but round donut beds function differently from flat mattresses. Because the sleeping surface is bounded by a raised rim, an animal needs enough flat area inside the ring to curl tightly without being forced against the walls, or enough rim support if they prefer leaning outward. Measuring the sleeper in a natural resting posture avoids buying a bed that cramps the animal or leaves excess empty floor.

Measuring the sleeper while curled

A donut bed suits animals that sleep curled into a ball with their paws tucked inward. To determine the correct diameter, measure the animal while it is fully asleep in that position. Take the distance from the top of the head or nose down to the base of the tail or rump, representing the widest point of the circle they form on the floor.

Measuring a dog or cat while standing or stretched out gives a false number for a circular nest. A pet that spans thirty inches when sprawled flat might curl into a sixteen-inch circle. The curled measurement dictates the minimum central diameter needed before factoring in the raised perimeter.

Translating dimensions to bed diameter

Catalogue dimensions for donut beds describe the total outer width from edge to edge, not the interior cushion space alone. The Round Donut Pet Bed comes in a 19.7-inch diameter with a 5.9-inch profile, as well as a 24.0-inch diameter with a 6.5-inch profile, offered across 11 colourways. The Calming Donut Cat Bed measures 19.6 by 19.6 inches and weighs 1.98 pounds across 6 colourways.

Because the bolsters consume several inches of total span on both sides, the usable flat floor inside is smaller than the product title suggests. The 20x20 inch format accommodates pets up to 15 lbs, while the 24x24 inch size fits animals up to 25 lbs. Adding two to four inches to your curled animal measurement ensures they fit inside the central well without perching entirely on the rim.

How animals use the bolster rim

The raised perimeter wall of a donut nest serves two mechanical purposes: it acts as a physical draft barrier and provides a raised rest for the head and neck. In the Round Donut Pet Bed, the interior cut pile fabric and suede interior filling are packed to maintain wall structure under load. A non-slip oxford bottom helps prevent the unit from sliding across hard floors when an animal enters.

Some pets prefer to push their spine firmly against the inner wall to trap body heat, while others rest their chin over the top lip to monitor the room. Animals that push heavily against bolsters need sturdy side walls that do not collapse flat under body weight, while animals that dislike enclosed boundaries usually prefer flat pads or open platforms.

When a raised mesh cot is the better choice

Deep faux fur and plush donut beds retain significant heat, which works against large animals or breeds prone to warm temperatures. For hot indoor floors or warm weather, an elevated platform provides better airflow than a fabric nest. The Elevated Cooling Dog Bed measures 48 by 35 inches with an 8-inch clearance off the floor, weighing 8.36 pounds across 5 colourways.

Suspending the sleeper on a taut surface allows air to circulate entirely beneath the body rather than trapping warmth inside stuffed walls. For travel and vehicle use, enclosed mesh alternatives like the Pop-Up Travel Dog Bed offer a 36.6 by 21.3 inch framed footprint with 600D polyester fabric, giving ventilation without the thermal density of deep shag or cut pile nests.

Shelter design versus indoor bedding

Placing an indoor plush bed on an open porch or patio exposes the filling to damp air, which degrades the loft and holds ground moisture. Outdoor animals require dedicated enclosed structures rather than deep donut nests. The Insulated Outdoor Cat House measures 17 by 13 inches across 2 colourways and provides an enclosed shelter to shield pets from external elements.

Because wind and rain can reach through entry openings, exterior houses must be placed under eaves, steps, or covered porches rather than open yards. The structure relies on wipe-clean outer surfaces using non-abrasive soap and water, while containing a removable interior mat that can be laundered separately from the rigid outer frame.

Washing complete beds versus removable covers

Pet beds collect dander, saliva, and outdoor grit much faster than human bedding, making the cleaning method an important maintenance consideration. Both the Round Donut Pet Bed and the Calming Donut Cat Bed are constructed without removable slipcovers. The entire bed is placed directly into the washing machine on a gentle cycle with cold water.

To prevent the faux shag fibres or internal filling from clumping or matting, these beds require tumble drying on low heat immediately after washing rather than air drying. For heavier playpens like the Pop-Up Travel Dog Bed, the 180-gram polyester oxford fabric requires cold hand washing up to 30 degrees Celsius without machine tumble drying or ironing.