The tongue is long and thin, reaching as much as , and has numerous long papillae that give it a brush-like appearance. This improves the animal's ability to collect pollen and consume semi-liquid food. The structure of the ear is also unusual, since the animal possesses a unique bony disc with a narrow crescent-shaped slit just in front of the eardrum. The function of this bone is unclear, but it may act as a Helmholtz resonator and enhance sensitivity to certain frequencies of sound. The brain has been recorded as weighing .