My two dogs love these cots (I bought 2).  We just happened to go out in our RV for 2 weeks within a few days of receiving these cots in the mail.  In fact, we are camping in Pismo Beach right now and our dogs use them every day.  They have their own seats off the ground right along side ours.  Purchased on sale for quite a discount too.

Pros: No assembly, has it's own carrying bag, good materials, quality product
Cons: Can't think of any.