A "sneeze-free" cat that does not trigger an allergic reaction in humans has been bred. The ultimate designer pet has been created by an American firm which has used selective breeding to produce what it bills as the world's first hypoallergenic cat. California-based Allerca Lifestyle Pets, which plans to sell the four-legged friends in the UK for thousands of pounds each, said the breakthrough would provide much-needed relief for the millions of cat-lovers who suffer from feline allergies. But People for the Ethical Treatment of Animals (PETA) accused the company of treating pets as "nothing more than designer handbags just to earn a buck". Cat allergies are triggered by a protein in the cat's saliva and skin flakes that are left on the animal's fur when it licks itself during grooming. An allergic person who inhales these airborne particles can suffer an asthma attack, itching, sneezing or skin rashes within minutes. Scientists at Allerca claim to have produced more than 20 allergy-free cats already by breeding over several generations, after identifying short-haired felines without the protein which provokes a reaction in humans. The firm plans to begin selling the designer pets for £7,500 - not including shipping or quarantine costs - from next year and says it has hundreds of advance orders from across the US and Europe. The company's chief executive, Simon Brodie, said: "The personality of the first breed of hypoallergenic cat is playful and affectionate. "They make great family pets and are wonderful with children." Megan Young, the chief executive of Allerca, said: "For the first time, people who have allergies will be able to keep a cat without suffering. "This is a scientific breakthrough." But PETA said it was opposed to the designer pets.