1- Seed dispersal is a key step in the plant life cycle, and thus in forest regeneration in terrestrial bioregions, especially in the tropics. 2- This work evaluates secondary seed dispersal by dung beetles following the aggregated pattern of faeces observed in chimpanzee nesting sites. Four plant species were selected for this experiment and were chosen as they were consumed daily by chimpanzees during the study period, and their seeds were found intact in chimpanzee faeces. The four plant species were: Dacryodes klaineana (Pierre) H.J. Lam, Diospyros mannii Hiern, Pycnanthus angolensis (Welw.) Warb. and Uapaca guineensis Muell. Arg. Seed dispersal was investigated by exposing chimpanzee faeces samples containing 28 seeds (7 from each plant species) on the forest floor for 48h. The germination success of the four plant species from seeds buried different depths by dung beetles was also tested. For each species, 600 seeds were sown in nursery at depths of 0, 2, 5, 10 and 15 cm (i.e. 120 seeds per depth). 3- The results show that majority of seeds were dispersed on the surface, i.e. 45.6% against 6.3% of buried seeds. The Southern chimpanzee range showed the highest seed burial rate with 10.31% of seeds buried at an average depth of 7.45 cm. After germination, only the seeds of Uapaca guineensis and Diospyros mannii sown at 2 and 5 cm had a >14% (range: 14.2 and 30.8%) germination rate and seedling establishment. 4- These results suggest that chimpanzees contribute to the early stages of recruitment of the plant target species and that dung beetles contribute significantly to seedling establishment and emergence within Tai National Park.