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Horse

Tobiano

Gene

Tobiano (TO) is a dominant white spotting pattern caused by a large inversion on chromosome 3 near the KIT gene. White usually crosses the back between the ears and the tail, the legs are often white and the head is usually colored. Two copies are viable, and a horse with two copies passes tobiano to every foal.

How Tobiano works

One copy is enough to show Tobiano; one and two copies look the same.

Class
Dominant
One copy
One tobiano copy
Two copies
TO/TO (homozygous tobiano)
Symbol
TO
Part of

Sources

Show all 5 sources

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Quick facts

Guides & articles
30

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Guides & articles

Guides and articles for Tobiano horse owners.

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How Much Does a Horse Cost? 2026 Prices to Buy and Keep a Horse

A horse can cost anything from a $125 federal adoption fee for an untrained wild horse to more than $300,000 for an elite yearling, but the middle half of horses sold at recent catalog auctions brought between $4,250 and $16,500. In the Creatures horse auction price guide, which covers 2,733 catalogued sales through July 2026, […]

What to Feed a Horse: Forage, Hay, Grain, and Ration Basics

A horse should eat mostly forage, roughly 1.5 to 2.5 percent of its body weight in dry matter every day, with hay or pasture making up at least half the ration and always the base of it. Feed by weight, not by the scoop or coffee can, offer forage before any grain, keep clean water […]

How Long Are Horses Pregnant? Mare Gestation Chart and Foaling Date Calculator

Horses are pregnant for about 340 days, a little over 11 months, with a normal range of 320 to 370 days. See our foaling date chart, plus ponies and minis.

Horse Coat Color DNA Records: Save the Report Behind the Prediction

A coat color prediction is only as informative as the evidence entered into it. A photograph, a laboratory result and a remembered description are different inputs. Keeping the report behind each result makes it easier to explore possibilities without later forgetting which values were tested and which were assumptions. Creatures offers a coat color calculator […]

How Long Do Horses Live? Horse Lifespan by Care, Health, and Use

Most domestic horses live 25 to 30 years, according to the Merck Veterinary Manual, and plenty now reach their 30s with good care. A well-kept miniature horse can live past 40. Where a particular horse lands in that range has less to do with luck than most owners assume, and more to do with a […]

Animal Listing Alerts: Build a Saved Search That Fits What You Need

An animal listing alert is most useful when its filters describe a real buying decision. On Creatures, a saved search looks for new listings that match your chosen filters; a watchlist keeps individual listings you want to revisit. Start with the marketplace, set the filters that matter, and inspect the results before saving the search. […]

Tobiano Tools

Calculators, generators, and guides preset for Tobiano horse.

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