It really depends on what you want to do with your dog. As far as travelling with your dog in a RV, there are a lot of parks that restrict certain breeds like pit bulls, rotties, big dogs that have (in most cases unfounded) reps as being aggressive. Large dogs tend to have some physical problems that medium sized dogs don't, small dogs also can have physical issues. Some dogs are touted as "non-allergenic" which is sort of the case. Some breeds tend to be more stubborn, some smarter (which in and of itself can be an issue) and some friendlier. I would suggest you do some internet searches on breeds that fill in the blank for your wants. We always had sort of medium sized mixed breeds when I was growing up and mutts are my favorites. However, right now we have a yorkie. If you have allergies it is one of the easier breeds but there are other issues. Small dogs like yorkies can not be left outside alone, they are prey to a lot of other creatures. Yorkies are smart but stubborn, so potty training has it's pitfalls. They also shouldn't be left alone for longer periods of time, they are very people dependent. Mine is actually curled up on my lap right now, under the covers. We have a RV and she goes everywhere with us. We rarely leave her alone for longer than say however long it might take to go out to eat. Otherwise, she is with us. I have a number of carriers I can wear that I carry her in if we go for walks or hikes or are just out exploring and she gets tired. I've found lots of places that aren't advertised as dog friendly will let me at least walk in with the if she is in a carrier on my body. If you do decide to RV with one, you should find some sort of camera/temp. notification system in case the power goes out. You don't want to leave the pup alone in the RV for long in either the summer or winter without power.
