There is a bug with either the dogs (wild, jackal, etc.) or with summoners' pets... Quite often an encounter may be broken because you have been 'rescued' by your pet - even if you take NO damage and nuke the mutt(s) to kingdom come. This results in no xp gain AND no quest credits. I still haven't figured out if dog/humanoid combos (i.e. guard + guarddog, hunter + coondog, etc) are likewise bugged.