Mixed pinto is when a pony has more than one pinto pattern. It is often very difficult to determine which and how many pinto patterns a horse carries. Commonly a tobiano that also has splash and/or sabino is called a tovero. Tobiano+splashes or tobiano+sabinos are very common in Chincoteagues. The patterns can have many different outcomes when interacting to creating more white and others appear to blend into the other pattern due to their minimalness. The expression of multiple pinto patterns can result in unusual looking patterns and markings.
Many of the descriptions below are a guess, with the exception of the blue eyed ponies which are likely a result of splash. Some of the suspected splashes are based upon the appearance of family members or offspring.
Chestnut tobiano+splash or sabino. Leonard Stud, Picture by Amanda Geci.
Black tobiano+splash. Misty's Black Mist, 2003, Picture by Amanda Geci.
Bay tobiano+sabinos. Ice Cream Sundae and He's a Suitor, Picture courtesy of the National Chincoteague Pony Association.
Bay tobiano+splash or sabino. Star Sapphire, Picture by Amanda Geci.
Chestnut splash+tobiano Wild filly by Surfer Dude, Picture by Amanda Geci.
Bay tobiano+splash. Has a blue eye indicative of splash. Carol's Little Freedom, 2011, Picture by Amanda Geci.
Chestnut tobiano+splash with blue eyes. Wild colt, 2007, Picture by Amanda Geci.
Black tobiano+splash. Flirtatious, 1995, Picture by Amanda Geci.
Chestnut tobiano+splash. Zephyr, Picture courtesy of Celina Boltinghouse
Black tobiano+splash colt, is likely homozygous for splash as both parents splash. Dam is a bay tobiano+heterozygous splash and sire is heterozygous splash Surfer Dude. Chincoteague Desperado and Island Breeze, Picture by Amanda Geci.
Chestnut tobiano+sabino. Feral colt out of Trinity, Picture by Amanda Geci.
Black tobiano+splash. Tested homozygous for tobiano. Chesapeake Powhattan's Promise, 2014, Picture by Amanda Geci.
Bay tobiano+splash. All That Jazz, Picture courtesy of Debbie Ober.
Dark bay tobiano+sabino as a foal and as a 3 year old. Wildest Dreams, Picture by Amanda Geci.
Tobiano+sabino and tobiano+splash. Historical reference. Feral mares, 1977, Photo by Joseph Spies from Wild Ponies of Chincoteague.
Bay tobiano+splash. Has blue eyes and dam also appeared to be a tobiano+splash. Historical reference. Feral Foal, 1967, Screen shot from a Wild Kingdom episode.
Chestnut almost all white pinto, likely splash+tobiano. Historical reference. Feral Pony, 1967, Picture from a Wild Kingdom episode.