Hi, we have had up to 9 dogs at once. We have 3 and over Christmas we had a house full. I have never had any problems, knock on wood. How we introduce them is first I separate the dogs and let the newest arrival get calm first. I put our three in the bedroom, some in the garage, some in another room, etc. I let our dogs out first and let them get use to the new dogs. Once everyone is calm, I let the next set out. I am not going to say its easy! Sometimes it is and some times it takes some time. Depends on the dogs and how much they have been around other dogs. Trust me, during that first couple of hours I am doing a lot of snapping, clapping and anything else to snap them out of the attitudes some dogs have. I will say this, up until 2 months ago I would take almost any dog. I had a great dog but he was not neutered. The meet and greet went great all was good and I had a last min booking with 2 dogs. This male started getting very aggressive, he changed quickly. I ended up having to separate him from the pack for the rest of his stay. I will say this and my only advice start slowly, add dogs and you will know what you can handle. Oh and feeding. Well I have a dog food line. I make all the food bowls. I feed my 3 in our room, some outside, some in the garage and some in the main house. With that many dogs I have wet food to get them to eat faster and I never, never free feed them when that many dogs are in the house. I tell the owners that up front. Its to hard to free feed in my opinion. That's our story and if you look at our profile pics you will see all the dogs laying in the sun on the back deck or all in the living room. Its a handful and you really earn your money that is for sure. I don't leave the house unless someone else is home to watch them all. Cheers, Ambrele