My little terrier if allowed in the flower room will jump up and grab a branch and hang in the air until it breaks or I chase him whichever comes first. He then lays down and lazily field strips it to shreds. He's about 14 lb now and it has not hurt him yet.
Sometimes when I smoke he'll come over to examine the exhale and then watch TV and take a nap.
But I don't let him have it often. So it's a rare treat. Oh and I'm more lenient about exhaling toward him than allowing him to eat the plant. That's the once or twice a year thing.