Haemophilia B: Also referred to as the “Christmas disorder”, this issue is carried on the feminine line but only influences male cats. The condition is thought to crop up among British Shorthairs. A youthful British Blue male demonstrating the copper eyes common of cats with 'blue' fur Following the war, https://britishshorthairbreed02234.blogsmine.com/29091644/the-smart-trick-of-cinnamon-kittens-that-no-one-is-discussing