The Chartreux is a stunning grey cat with eyes in hues of gold, copper or orange. Boasting incredibly soft fur, it's been said that they were previously sought after by furriers and it's thought that the wool 'pile de Chartreux' was named after them. It's unclear how far this grey cat breed dates back, but there is record of them being used by Carthusian monks near Paris in the 18th century as ratters. Today, they make great pets and tend to attach themselves to one owner, yet they're also quite comfortable by themselves, making them particularly well suited to working pet owners