 They have also been observed to engage in intelligent feeding behaviours, such as breaking millipedes in half to suck out the innards, stripping stems in order to consume the innermost pith, and searching pith for larvae.The Bioko drill is also known as a primary seed disperser, contributing to tree dispersal through their consumption of tree seeds and fruits.Their effectiveness is due to their terrestrial nature, as they consume more dropped, and therefore more mature fruits, the seeds of which are dispersed with their faecal matter.