A: Size: Measure nose-to-tail when stretched, add 10-20cm. Style1: Bolster / Enclosed Beds – Ideal for pets that like to curl up, nestle against the edges, and feel a sense of security from an enclosed, den-like space.Style2: Flat / Open Beds – Best for pets that prefer to sprawl out with limbs extended and tend to shift positions frequently, especially larger breeds.Style3: Orthopedic Beds – Specifically designed for senior pets or those with joint issues, providing extra support regardless of sleeping position to help relieve pressure points.