Grullo

(Grus grus) is the most common species of crane in Spain and the giver of its name to the grullo color The word "grulla" in Spanish means crane. (The original Spanish noun is pronounced in American Spanish and in Peninsular Spanish.) Though the Spanish word for "crane" is always "grulla" regardless of gender, some people call male horses "grullo" and female horses "grulla", including in Spanish. Grulla is also called mouse dun or blue dun. == Distribution ==

The tarpan (Equus ferus ferus) was a relative of the domestic horse that became extinct in the nineteenth century, and which appears to have had grulla coloration. The tarpan has been considered a true wild horse, an undomesticated relative or ancestor of the domestic horse. However, some authorities in the early twentieth century held the opinion that most equines called tarpans were actually domestic or feral horses, not a separate species. Several breeds with the grulla color have been developed in efforts to recreate ("breed back") the tarpan. These breeds include the Heck horse and Konik. One of the first experiments in this regard was published in 1906 by James Cossar Ewart, who obtained a "tarpan-like" horse by crossing a Shetland mare and a black Welsh pony. == References ==

• * [https://web.archive.org/web/20060212080420/http://www.enloequarterhorses.com/inform1.php Grulla Color Genetics and Photos • • http://www.equusite.com/articles/basics/colors/colorsGrullo.shtml • Dun Zygosity test from Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis. Web site accessed January 13, 2008. • "Introduction to Coat Color Genetics" from Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis. Web Site accessed January 12, 2008 https://www.spanishdict.com/translate/grullo