I have multiple dogs and started out with a trailer. Its' a pain. you have to move the dogs and their crates etc from your truck to the TT and then repeat the process when you leave. I sold the TT and bought a Class C.
More importantly how are you going to fit 5 dogs and 4 adults 'comfortably' in the truck while traveling if you tow a RV trailer.??
For me, my dogs NEVER travel loose in any vehicle for safety reasons. One slow speed accident where your dog flies into a windshield or out a window or an emt opens the door to help you and out your dogs go into traffic and get run over would change your mind about that. But I digress.
A Class C has an overhead bunk which makes for a perfect place to put dog crates to keep the dogs in while traveling etc.,and keeps them safe. And doesn't take up any room on the floor of your RV.
Also gives them a nice secure place to eat their food/water bowls/relax and to put them when the family is going in and out of the MH to keep them from being underfoot and slipping out the RV door!
All you need to do is anchor the crates in some manner to the base to keep them from moving.
My dogs love riding in the cab over in their crates.
