Cornish Rex vs Devon Rex

The Cornish Rex's signature ultra-thin, guard-hair-free coat isn't just low-maintenance styling — it leaves the cat with little real insulation or sun protection, so these cats chill and sunburn far more easily than a normal-coated cat and often need sweaters or strictly indoor, temperature-controlled living.

Devon Rex are talkative and constantly want to be involved in whatever you're doing, including waking you up, and despite low shedding they are not actually hypoallergenic — the allergen (Fel d 1) is in their skin and saliva, not their sparse hair, so people with real cat allergies still react to them.