depends on the camera u have...
if you using something with a external flash, den mount on a omnibounce, den use red eye reduction, den shoot with shutter priority... since u wan clear pics, u should set to fast shutter. but fast shutter = darker pics, so u have to use flash. den direct flash will get very washed out pics or over exposed front... den when u bounce from an expo ceiling... i think unless the flash really powerful... if not will not be able to bounce back... so using omnibounce or bounce card is better. den red eye reduction to prevent seeing this spot in the dog's eye...