The Cornish Rex is distinguished from all other breeds by its extremely soft, wavy coat and racy type. Smallest to Small; torso long and slender, not tubular; back is naturally arched; shoulders well knit; rump rounded and well muscled. Comparatively small and egg-shaped; length about one-third greater than width; definite whisker break; oval with gently curving outline; muzzle narrowing slightly to rounded end; cheekbones high and prominent; nose Roman with high prominent bridge. Short, extremely soft, silky, and completely free of guard hairs; relatively dense; size and depth of wave may vary.

The Cornish Rex is a highly intelligent, affectionate and extroverted breed, notwithstanding its somewhat aloof and sophisticated appearance. It is curious, inventive, playful and mischievous by nature, making it an endearing household companion and a wonderful pet. Most Cornish Rex like to play fetch and chase with other pets and with people. They are unusually acrobatic and enjoy leaping onto and off of high places, seemingly simply for the sheer joy of it. The Cornish Rex is an adventurous animal that readily adapts to new situations and environments. It will explore wherever – and whenever – it can. It often will be seen jumping into or onto refrigerators, examining washing machines or climbing into open clothes driers. Some owners consider these antics to be deliberately provocative on the part of their cats, but in a completely fun and happy way. The Cornish Rex is outgoing and people-oriented. It seeks out human companionship and the fellowship of other household animals. Most representatives of this breed make very suitable pets for children or adults who are timid around other animals.