My last dog (a king charles spaniel) loved to get high. Obviously the first time he did wasn't out of choice but he was next to me on the sofa anyway so i just blew a few puffs in his face. After that he used to come sit on my lap with his face right where the smoke would drift and look at me with his "i want some of that" eyes.

He died three years agao though. I have a new dog (yorkshire terrier) but i think he's too small so he wont get to expirience it.