Although most lemurs in the known world live in the Summer Isles and Sothoryos, there is one species that can be found much farther north, in the Forest of Qohor. These lemurs have silver-white fur and huge purple eyes, and are called Little Valyrians because they share the famous Valyrian racial traits.
A preserved example of one of these lemurs can be found stuffed and mounted in the Citadel. So many hands of would-be maesters have patted it for luck in their examinations, its fur has long since fallen out.
A Game of Thrones
Daenerys Targaryen travels with Khal Drogo's khalasar through the Forest of Qohor for half a month. Dany is aware that lemurs with silver fur and huge purple eyes live in the forest, but all the animals flee before the approach of the khalasar and she gets no glimpse of them.