The Chartreux is a rare breed of domestic cat from France and is recognised by a number of registries around the world. It is not currently recognised by the GCCF in the UK, ostensibly for being too similar to the British Shorthair, one of whose colours is a similar blue-grey. The Chartreux is large and muscular, with relatively short, fine-boned limbs, and very fast reflexes. They are known for their blue (grey) water-resistant short hair double coats which are often slightly nappy in texture (often showing “breaks” like a sheepskin) and orange- or copper-colored eyes. Chartreux cats are also known for their “smile”: due to the structure of their heads and their tapered muzzles, they often appear to be smiling. Chartreux are exceptional hunters and are highly prized by farmers. (source)