We have 2 medium sized dogs who do really well with other dogs. They are a major part of the family as we keep the pack mentality. They are allowed on the sofa and the bed but at the same time they know their place in the pack. They arent allowed to beg during meal time. They go on a couple of long walks each day and enjoy daily time at the dog park. We often keep friend's dogs over for several nights at a time and our dogs love having their friends over. We encourage play daily with toys and with each other. I have dealt with various breeds or various sizes and temperaments for 20 years and we have our vet on call.