Question: Is it OK to let a dog roam around a party?
Answer: A dog may be man’s best friend, but, let’s be honest, not all humans like dogs and not all dogs like all humans. For most party hosts, this isn’t a big issue: They know their dog and will put it in a crate, the yard (weather permitting) or an area of the house where the pet will be comfortable.
Or they will let the dog wander about, knowing that it is calm and not a food thief or constantly underfoot. Most hosts also know the guests who are coming over, and most guests will know that the host has a dog. They may have already met the dog and are expecting it to be present.
Problems arise when the dog has characteristics or tendencies that distract guests or make them uncomfortable, or when a guest has fears or allergies.
via Whisker Therapy