(Well I mean there's more interaction that can go on before and after seeing how this is someone's characters choice rather than a creatures everyday job so this can go into different scenarios like romance, or being evil and mean just stuff like that and then there's the part of which the prey is eaten and inside the pred there can be interactions in that part and after the pred releases or digest the prey (regeneration is included to any character that may come to be digested) so based on those few reasons is to why I think my character being a fellow prisoner and your pred would be best rather than just a creature which you would be just another prisoner added to the prison and that's it)