Poop in the office - quite a few times, middle of the office floor or in a corridor.
Dogs do smell - they just do. We as owners, just get used to the smell.
Everyone fawning over the dogs, the dogs get bored and start wandering, need attention etc.
For me an office is not a place dogs, what next, bring your kids in? I have a dog, but it's my responsibility to ensure she is looked after while i'm at work. I know some people disagree and even at work my team have challenged me as some want to bring them in, some don't - some have a dislike for dogs. So no dogs rule is enforced.