Hello! My wife and I recently purchased the Vista 35U. So far, we have only made one trip in it and we love it. My two big brave dogs are not so much in love with it. They are both very nervous in the MH, even though they love riding in the car. My guess is that they are feeling that the house is moving! I'm sure that with time they will become accustomed to it and will settle down. I guess we just need to take more trips!