 The Sorraia is a rare breed of horse indigenous to the portion of the Iberian peninsula , in the Sorraia River basin , in Portugal . The Sorraia is known for its primitive features , including a convex profile and dun coloring with primitive markings . Concerning its origins , a theory has been advanced by some authors that the Sorraia is a descendant of primitive horses belonging to the naturally occurring wild fauna of Southern Iberia . Studies are currently ongoing to discover the relationship between the Sorraia and various wild horse types , as well as its relationship with other breeds from the Iberian Peninsula and Northern Africa . 
 The Sorraia <a href='drop_aux' title='1'><mark>is</mark></a>a rare breed of horse indigenous to the portion of the Iberian peninsula , in the Sorraia River basin , in Portugal . The Sorraia is known for its primitive features , including a convex profile and dun coloring with primitive markings . Concerning its origins , a theory <a href='been_done' title='2'><mark>has</mark></a> been advanced by some authors that the Sorraia is a descendant of primitive horses belonging to the naturally occurring wild fauna of Southern Iberia . Studies <a href='drop_aux' title='3'><mark>are</mark></a>currently ongoing to discover the relationship between the Sorraia and various wild horse types , as well as its relationship with other breeds from the Iberian Peninsula and Northern Africa . 
The Sorraia a rare breed of horse indigenous to the portion of da Iberian peninsula , in tdaSorraia River basin , in Portugal . Thdaorraia is known for its primitive features , including a convex profile and dun coloring with primitive markings . Concerning its origins , a theory done been advanced by some authors dat thedarraia is a descendant of primitive horses belonging to the naturally occurring wild fauna of Southern Iberia . Studies currently ongoing to discover the relationship between the Sorraia and various wild horse types , as well as its relationship with other breeds from the Iberian Peninsula and Northern Africa .