You couldn't be serious! I mean... sure, if there's nothing to avoid them inhaling your bongsmoke, then... if you were a decent person, you would give the dog away... or just not own one.
I have friends that claim they get their dogs stoned all the time and I think it's fucking sick.
Imagine getting hold of a four year old child, and shoving LSD, or Cannabis down their throat. Think about it, it's a very similar scenario, IMO.
I've seen some human beings freak-out, with which pot has not really agreed with them. Some of them nearly crying from anxiety, etc...
Imagine how the hell that shit would feel to an animal.
And... as for making the decisions for the animals, whether they "want" to get high or not... I don't think that's entirely up to us. They don't have the same "rights" as what humans do... but they sure as hell deserve the right to be sober, if they choose to.