Pet pens

Looked at a campground website we were considering and they do not allow the open top pens but allow the full enclosure crates.

Don't have an answer for you regarding the bears. But perhaps to make sure the dogs don't jump out?

Are you talking about exercise pens with no tops?
They make a custom fit top for ex-pens. You have to set the pen up in a square to fit. It is hinged so you can open one side up to access the dogs.

I use them all the time with my ex pens at CG's. Keeps the dogs secure and also keeps people from their need to stick their hands over your pens! :C

http://www.midwestpetproducts.com/midwestexercisepens/exercise-pen-wire-mesh-top