I've never seen a dog yet that doesn't hover around whoever has the bowl/joint, copping a contact buzz. Blow it in their face? Nope. But they'll get theirs just by invading your space.
A number of years back (like 30), my brother gave me for a BD present a 1/4oz bag, it was one bud. Yeah, seriously...one bud. Don't remember the strain or who he got it from, but to say I was impressed is an understatement.
Anyway.....had a party and of course everyone was contributing to the stash and smoking from it and all was good. I was saving that bud for later to smoke with my brother and a select few. Late that night as we were sitting in front of fireplace, I broke off a bowl size chunk of that bud and placed the bud on a tray and placed it under the rocking chair I was in. Lit the bong, pass pass, stare at fire. Grins all around.
Meanwhile, my brothers Shepherd was trolling around, sniffing heavy, mooching food. All was quiet except for crackle of fire. Then I heard the sound of munching. Took a few secs to realize what was happening, looked under my rocker to see a 110lb German Shepherd with top part of bud stem out one side of his mouth with the bottom part out the other side. Yeah, that little bastard ate my birthday bud. Then he had the balls to curl up in front of the fire and snore for two hours.
Dogs will get themselves stoned given half the chance.