Taking a dog back and forth between the UK and US...

I'm sure this is a common sense question, but I'm asking anyway.   DH and I are adopting a dog and I'm wondering about the situation re: visiting the US.  Ideally, we'll send him to friends' houses or kennel him when we go back to the US, but I was wondering if taking him to the US is even an option?  I mean, I know he can go to the US, but can he come back since he's originally from the UK?  Does he have to go through the PETS process? 

In short, what documentation is required to take a dog to the US for a couple of weeks and return to the UK? Is it even possible to do this without a pile of paperwork?

I'm not sure if your dog will have to go through PETS again or not but unless you're going back to the US for more than a few weeks, I think taking a dog back to the US is a bit impractical.  I suppose it depends on which coast you're going to but I know flying my dog from SF to London is not going to be cheap.  Never mind that for some animals, being contained that long can be traumatic. 

Sorry, not very helpful with the paperwork and logistics... 

I do have a website bookmarked www.dogsaway.co.uk that may have some information you could use. I haven't had time to fully explore it yet but it may be helpful.
Bethany

I'll doggie-sit for you, and I won't charge $750 like British Airways does to fly a 10 pound cat to the UK.  Imagine round trip!!!