because i won't let you in unless your cat is realistic and because i'm tired of people using impossible cats

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general rules [ basic ]

《 a cat cannot simultaneously have dilute and non-dilute colouring, e.g. a dilute tortoiseshell cannot have black patches 》

《 tortoiseshell cats or calico cats are generally biologically female 》

《 cats can never have purple eyes, and most cats cannot have blue eyes [ even the ones that do can never have vibrant blue eyes ]! generally, only white / mostly white cats or colourpoints will have blue eyes. overall, the cat must either be a colourpoint or have minimal colour with white touching the eyes 》

《 generally, classic colourpoint cats will always have blue eyes. additionally, a cat's eyes will never be vibrant or deep blue, with most having light blue eyes, but with some colourpoints having bright, medium blue eyes 》

《 cats cannot have white patches or white stripes, but having coloured patches on white is allowed, e.g. a brown tabby cat with white patches is illegal, but a white cat with brown tabby patches is legal 》

《 cats cannot have more than three base fur colours, e.g. a calico with red and black patches is legal, but a calico with red, black and brown patches is illegal 》

《 ginger cats cannot be solid, i.e. they must have stripes, however faint; the same is true for cream, which is the dilution of red 》

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cat appearance guide [ non-basic aspects marked with * ]

tabby patterns

mackerel / broken mackerel
classic / blotched
spotted
ticked

colours

non-dilute:

black

chocolate [ brown ] [ note that a brown tabby with black stripes is not a true 'chocolate' cat ]

cinnamon

red [ ginger ]

white

dilute:

black > blue [ note that a gray tabby with black stripes is not a true 'blue' cat ]

brown > lilac / lavender

cinnamon > fawn

red > cream

tortoiseshell cats

tortoiseshell cats are cats with two colours

tortoiseshell and white refers to a tortoiseshell having >50% white; calico refers to a cat with >50% white and distinct colour splotches

tortoiseshell tabbies [ torbies ] / calico tabbies [ calibies ]: tortoiseshell or calico cats with stripes

*silver / golden series [ cats with tipped fur and a silver / golden base coat ]

note: cats in this series generally will not have white spotting; smoke cats may have small amounts of white, but this is rare

smoke [ silver only ]

shaded [ silver or gold ]

chinchilla / tipped [ silver or gold ]
silver / golden tabby [ colour of stripes is prefixes the base colour, e.g. red silver tabby; default silver / golden tabby means black stripes; golden tabbies generally have black or chocolate stripes, though other colours are theoretically possible ]

*pointedness

cats may have any base colour, dilute or not, as their points [ save for silver / golden ], including being able to have tortoiseshell points

seal point: a colourpoint with a cream body and dark points

lynx point: a colourpoint with striped points

the body of a colourpoint cat may vary in the amount of pigmentation depending on how strong the colour restriction gene is. particularly, burmese colourpoint cats' fur does not contrast much from their points, and their eyes can be golden [ most common ] or green instead of blue

[ AfterTheSharpEyedJay help me please ]

white in colourpoint cats

colourpoint cats may have white spotting, sometimes only on the paws [ known as 'mitted colourpoints' ] or have some of their body be white and others coloured [ known as 'bicolour colourpoints' ]. there may be a spot of colouring known as a 'blaze' on the nose bridge

eye colours

cats can generally have any eye colour ranging from brown to copper to yellow to green, as well as some cats having gray eyes. eye colour is often linked to coat colour and is brighter in pedigree cats

heterochromia

heterochromia [ eyes having two different colours, whether in separate eyes or one eye ] usually occurs in white cats, but may occur in any cat with the white spotting gene [ i.e. any cat that exhibits white ]. however, colourpoint cats cannot have heterochromia, due to their colour restriction gene always making their eyes blue

a cat with heterochromia or a chimera cat [ a product of two embryos fusing together, causing the cat to have two sets of dna ] may have blue in the eyes regardless of colour