The basic appeal for small dogs
Elevated cot beds, fabric stretched over a raised frame, can work well for small dogs and many adult small breeds take to them readily, since the firm, taut fabric supports their lighter body weight without the sinking or bottoming-out issue that affects cheap cushioned beds over time. Small dogs also benefit less from thick cushioning in general, since their lighter weight puts less pressure on joints than a large dog resting on the same surface, so a firmer cot surface tends to be comfortable rather than harsh for them.
Why puppies are a different case
Cot beds are less straightforward for puppies specifically. A teething puppy is likely to chew the fabric or frame edges, and lightweight PVC or metal-framed cots can be knocked over or damaged by an energetic, uncoordinated puppy in a way that's less of a concern with a heavier adult dog. Puppies also tend to prefer softer, warmer bedding they can burrow into, partly for security and partly because young puppies regulate body temperature less efficiently than adult dogs and can get colder on an open, elevated surface, particularly in cooler weather or air-conditioned rooms.
Practical adjustments that help
If you do want to use a cot-style bed for a puppy, adding a folded blanket or a soft liner on top gives some of the warmth and burrowing texture puppies seek while still providing the frame's structure, and it can be removed once the puppy matures and destructive chewing settles down. Choosing a cot with a low, stable frame reduces the tip-over risk, and supervising a young puppy's early use of any new bed, the same as any new object, helps catch chewing habits before they become established.
Sizing considerations specific to small dogs and puppies
Small dogs and puppies still need the frame sized to their full stretched-out length, not scaled down disproportionately, a common mistake is buying the smallest available cot size assuming "small dog" automatically means "smallest bed," when a slightly larger cot still lets a small dog stretch out fully rather than curling to fit. If buying for a growing puppy, sizing toward their expected adult length avoids an early repurchase.
When a cushioned bed makes more sense instead
For very young puppies still building coordination and warmth regulation, or for small dogs who are visibly cold-sensitive (thin coats, shivering in cool rooms), a soft cushioned or bolstered bed is often the more comfortable starting choice, with a cot bed introduced later or reserved for warmer months once the dog is older and better able to regulate their own body heat. Watching how your own dog actually settles, seeking out cool surfaces versus burrowing into soft bedding, is the most reliable guide either way.
