The size, health and needs of the dog or cat are a few of the prime aspects to consider before buying the bed. Talking about size, the bed should be big enough to let the pet lie flat on his side on the bed.

Old dogs or dogs that are ill or have arthritis would need special orthopedic dog beds.
The next consideration is the comfort level and style of the dog bed. Big cushions can serve as pillows, while dog mats are thinner than pillows. Rugs and cuddlers would definitely keep your dog comfortable and support a curling dog on all three sides.

The filling of the pet beds must provide the utmost comfort to the animal. Foam is the most preferred choice. Make sure you get removable and washable bed covers, because dogs are bound to make them dirty. Extra bed covers will prove to be a great help, especially with dogs that are not yet trained properly.