These data are data on the outcomes of contests between groups of banded mongooses in Mweya Peninsula, Uganda. Data were collected between 2000 and 2019. The data include information on group membership (number and sex of individuals, age, etc…) as well as physiological data (weight), genetic data (pedigree), and behavioural data (contest outcomes, eviction). Full details about this dataset can be found at https://doi.org/10.5285/be44b9c1-7355-4894-8f0d-b57b219b249b
