Category:Felis silvestris catus

• First, according to the coat/hair/fur pattern/colour. Put your file in a subcategory of Category:Cats by colour or pattern. ONLY if you can't find an appropriate category, put it in this category (Category:Felis silvestris catus).

Use these categories for predominantly one-coloured cats ("solid" or "self").	Black cats	Blue cats (grey)	Brown cats	Red cats (orange, marmalade)	White cats
These categories describe multi-colour patterns.	Bicolor cats - Blotches of 2 colours. White and another one, solid or can have tabby pattern.	Calico cats - Distinct blocks of 3 colours. Can have a few tortoiseshell or tabby pattern.	Tortoiseshell cats - Intermixed black and orange hairs.	Colorpoint cats - AKA "pointed", only tips are a different colour	Tabby cats - distinctive striped or spotted pattern

• Second, according to breed. If your cat is a purebred, put it in the appropriate subcategory of Category:Cat breeds. If it is no identifiable breed, it can be put in Category:Domestic cat, but this is optional.
• Third, according to hair length. If your cat has long hair, put it in Category:Longhaired cats. Medium length and short-haired cats are the most common, so they don't have separate categories. If your cat is hairless, it probably belongs in Category:Sphynx (cat) (a hairless breed).
• Fourth, by age. Is your photograph of a kitten? Then put it in Category:Kittens. Photographs of cats giving birth can be put in Category:Cat birth.
• Fifth, what does the photograph show of your cat? Is it a photograph of the cat's face? Then put it in Category:Cat portraits. Does it show some distinct body part of the cat? Then put it in Category:Cat anatomy. Does it show the cat doing something interesting or unusual, something other than just sitting there? Then put it in Category:Cat behavior.

Anytime you don't know how to categorise your photo, just put it in this category directly, and someone else will subcategorise it for you.