I have 2 male Sphynx boys.. both almost 4 years old. I feed them twice a day with a wet cat food and also twice a day with a dry food that they can nibble on over a period. I am feeding Royal Canin Fit 32.. not a great food but in South Africa it is the best of a bad bunch. They are constantly bringing up their food - 1 or the other at least every day. It is not vomit as such, more like regurgitated food. They are as fit and healthy as can be as well as very happy and playful. Do any Sphynx owners feed the special Sphynx breed Royal Canin? I had thought that I might try the breed specific food as perhaps it is a breed specific problems. Any thoughts?