There is nothing wrong with Purebred animals of any species - what I think we are really talking about is "Designer-Bred" animals that are changing the way nature evolved certain sub-species' features.

Siamese cats are naturally defined breeds and do not have health problems - well, until breeders decided they should look thin and pointed. When I was in Thailand (not so recently) I was trekking in areas where there were wild Siamese cats around. These cats were nothing like todays designer-bred Siamese - they were all quite "full figured" with roundish faces and traditional colouring. In fact, they looked like Burmese cats with Siamese colourings - This is how these animals are in the wild. This is how I would like to see them stay.

I am only making these comments in relation to natural breeds, not man-made breeds.

Lots of opinions coming from passionate people - it is good to see people care about our furry friends.