 Although habitat loss has been significant throughout the range of the slow lorises , their decline is most closely associated with unsustainable trade , either for exotic pets or for traditional medicine . Slow lorises are abundant at the markets and are among the most commonly sold primates . Slow lorises are easy to catch because they do not leap from tree to tree , often freezing and covering their face when spotted . ( For this reason , Indonesians call them malu malu or " shy one " . ) They are hunted not only by expert hunters , but are also easily caught by opportunist villagers because of the financial reward they bring at the markets . 
