What are gray and white cats called?

Gray ('grey' in the UK) and white cats are called 'bicolor cats' (two colour cats: gray or another color and white!). Sometimes people refer them as 'solid and white'. Solid and white applies to all colours and to shorthair and longhair cats. Gray and white describes a cat coat type not a cat breed. Many cat breeds are allowed under breed standards to have gray and white coats such as the Scottish Fold shown below.

Gray and white cat which happens to be a Scottish Fold but the coat applies to any cat, purebred or moggie. Photo in the public domain.

Goku - the cat with an inky face

Goku, a photo by fofurasfelinas on Flickr.

This handsome cat has what I have described as an inky face. It looks like someone has spilt some black ink over his face but in an attractive manner.

Goku is a black and white bicolor cat. I think the ink spillage effect comes because the black pattern is irregular.

Fairly often in bicolor cats like Goku you can see a fairly regular pattern and sometimes a symmetrical pattern.

Apparently he has a heart shaped patch of fur as well. Goku lives in Brazil and was photographed by the famous Giane Portal, Flickr name: foforasfelinas.