From A Wiki of Ice and Fire
Established in Lhazar, south-west of Vaes Dothrak, the Lhazareen's camps are frequently raided for slaves by the Dothraki, who refer to them as haesh rakhi or Lamb Men. Mirroring the importance of sheep herding in Lhazareen culture, their deity is known as the Great Shepherd.
The Lhazareen have copper skin and almond-shaped eyes, similar to the Dothraki, but they are more squat and flat-faced and have black hair cropped short. They herd sheep and farm. Their language has a sing-song quality. The Dothraki believe they lay with sheep.
A Game of Thones
A Dance with Dragons
Under Queen Daenerys Targaryen, Meereen makes an alliance with Lhazar. A former Lhazarene slave, the the Red Lamb, goes into training in the Great Pyramid to become a knight, and is a squire to Ser Barristan Selmy. By the end of the novel he is a newly-made knight.
|“||The Dothraki horselords call the Lhazarene the Lamb Men. When you shear them all they do is bleat. They are not a martial people.||”|