Smallest living horse  As of 7 July 2006, the record for the smallest living horse is Thumbelina, a miniature sorrel brown mare who measures 44.5 cm (17.5 in) to the withers and is owned by Kay and Paul Goessling (Both USA) who live on the Goose Creek Farm Inc, St Louis, Missouri, USA.  Longest tail on a horse  The longest […]