The Turkish Van is a semi-long-haired, standardised breed of domestic cat, which was developed in the United Kingdom from a selection of cats obtained from various cities of modern Turkey, especially southeast Turkey. The breed is rare, is one of the larger breeds, and is distinguished by the Van pattern, where the colour is restricted to the head and the tail, and the rest of the cat is white; this is due to the expression of the piebald white spotting gene, a type of partial leucism. A Turkish Van may have blue or amber eyes, or be odd-eyed.
A Turkish Van with heterochromia.
Turkish Van cats may have random spots over their body, but not as large as on their head and tail.
Mostly-white bicolour
Red
An odd-eyed cat has one blue eye and one eye either green, yellow, amber, or brown. This is a feline form of complete heterochromia, a condition that occurs in some other animals, including humans. There is also sectoral (partial) heterochromia, where two different colours occur within the same iris. The condition most commonly affects solid white cats, but may be found in cats of any coat colour.
An odd-eyed blue and white cat
An odd-eyed cat showing complete heterochromia (amber and blue eye) and sectoral heterochromia in the blue eye (partially brown-coloured)
A rare predominantly black cat with odd eyes
A typical example of an odd-eyed solid white cat
