Flat face and breathing
The flatter the face, the less room for the nose. Such a cat may snore, breathe with more effort and tire sooner. In a Swedish study of show cats, about 9 in 10 had a nose set too high or nostrils too narrow. It depends mostly on how flat the face is: a Persian with a clear nose has far fewer problems.
How it is found: No DNA test. Look at the parents: a visible nose and open nostrils.






