 Slow lorises have a round head because their skull is shorter than in other living strepsirrhine . Like other lorisids , its snout does not taper towards the front of the face as it does in lemurs , making the face appear less long and pointed . Compared to the slender lorises , the snout of the slow loris is even less pointed . As with other members of Lorisidae , its interorbital distance is shorter than in lemurs . The skull has prominent crests ( ridges of bone ) . A distinguishing feature of the slow loris skull is that the occipital bone is flattened and faces backward . The foramen magnum ( hole through which the spinal cord enters ) faces directly backward . The brains of slow lorises have more folds ( convolutions ) than the brains of galagos . 
