We have one 100 lb Golden Retriever. He sleeps on the floor between the pantry and drawers under the kitchen counter. He sleeps on the floor at home too, in spite of having a large, comfy bed. Night trips to the bathroom involve being careful not to step on him. We leave a small light on so that we're sure to be able to see him. We spend a lot of time outside the trailer and that's fine with him. He barks at other dogs but we haven't really left him alone much and when we tell him to be quiet he's good about obeying. On our last trip we put him in Ollie and left for a short walk. We could hear him if he barked but he was good and quiet. Being a Golden Retriever, he loves to swim. We were camped right on a river on this last trip. We let him swim early enough so that he dries off before we get into the trailer for the night. I try to brush him each day to cut down on the shedding in the trailer and sweep the floor each morning. So far, we haven't had a problem with clogged vents. I think that we could make it work with 2 dogs but so far our experience is with only 1.